{"id":65583,"date":"2026-03-27T09:29:21","date_gmt":"2026-03-27T13:29:21","guid":{"rendered":"https:\/\/bnonews.com\/?p=65583"},"modified":"2026-03-27T11:01:21","modified_gmt":"2026-03-27T15:01:21","slug":"24vdc-vs-120vac-choosing-the-right-voltage-for-your-tower-lights-control-circuit","status":"publish","type":"post","link":"https:\/\/bnonews.com\/index.php\/2026\/03\/24vdc-vs-120vac-choosing-the-right-voltage-for-your-tower-lights-control-circuit\/","title":{"rendered":"24VDC vs. 120VAC: Choosing the Right Voltage for Your Tower Light’s Control Circuit"},"content":{"rendered":"\n

Tower lights play a simple but important role on factory floors. They provide a quick visual signal that tells operators and maintenance teams what\u2019s happening with a machine\u2014whether it\u2019s running normally, waiting for input, or stopped due to a fault. Because these lights are often connected directly to the machine\u2019s control system, the voltage used in the control circuit becomes an important design decision.<\/p>\n\n\n\n

In many industrial control panels, the two most common voltage options are 24VDC and 120VAC. Both are widely used and capable of operating tower lights reliably, but they behave differently when it comes to safety, integration with automation systems, and overall control design.<\/p>\n\n\n\n

Choosing the right voltage is not just about powering the light. It affects how easily the tower light connects to PLC outputs, how safe the control circuit is for technicians, and how well the system fits into modern automation environments. For engineers and panel builders, understanding these differences helps ensure the control circuit is both reliable and practical for the application.<\/p>\n\n\n\n

In this article, we\u2019ll look at how 24VDC and 120VAC control circuits work, how they differ in real industrial environments, and when each option makes the most sense for tower light control.<\/p>\n\n\n\n

Understanding Tower Light Control Circuits<\/h2>\n\n\n\n

Before deciding between 24VDC and 120VAC, it helps to understand how tower lights<\/a> actually fit into a machine\u2019s control circuit.<\/p>\n\n\n\n

In most industrial machines, the tower light is not powered directly from the main electrical supply. Instead, it is connected to the control circuit, which is responsible for managing signals between components such as Programmable Logic Controllers (PLCs)<\/a>, relays, sensors, push buttons, and safety devices. The control circuit determines when each light segment\u2014red, yellow, green, or blue\u2014turns on based on machine conditions.<\/p>\n\n\n\n

For example, a PLC may activate the green light when the machine is running, switch to yellow during a warning condition, or trigger red when a fault occurs. The PLC output sends a control signal to the tower light, and that signal operates at a specific voltage level depending on how the control system is designed.<\/p>\n\n\n\n

In modern industrial automation, 24VDC has become the most widely used control voltage. Most PLC manufacturers design their input and output modules around 24VDC signals because they are safer for operators and easier to integrate with sensors, switches, and other automation devices. According to automation industry guidelines from organizations like IEC and major PLC manufacturers, low-voltage DC control circuits are now considered the preferred architecture for many new machines.<\/p>\n\n\n\n

However, 120VAC control circuits are still common, particularly in older equipment or facilities that historically relied on AC control transformers. Many legacy machines were designed this way because AC control power was easier to distribute within electrical panels and required fewer power supplies.<\/p>\n\n\n\n

Experienced control engineers often point out that the voltage choice usually follows the overall control architecture of the machine. If the system is PLC-driven with multiple sensors and automation devices, the control circuit typically uses 24VDC. If the machine relies more on traditional relays and contactors, 120VAC control wiring may still be present.<\/p>\n\n\n\n

Understanding how tower lights connect within this control system helps explain why the voltage choice is not just a technical detail\u2014it directly affects system compatibility, safety, and future expandability.<\/p>\n\n\n\n

What is 24VDC Control Voltage?<\/h2>\n\n\n\n

In modern industrial automation, 24VDC is widely used as the standard control voltage for many machine components. Instead of using alternating current from the facility power supply, the control circuit uses a 24-volt direct current power supply to operate devices such as PLC inputs and outputs, sensors, relays, push buttons, and tower lights.<\/p>\n\n\n\n

Inside a typical control panel, a switch-mode power supply converts incoming AC power (often 120V or 230V) into a stable 24VDC output. This DC voltage is then distributed across the control circuit to power various automation devices. Because the voltage level is relatively low, it reduces the risk of electrical shock and makes the control system safer for technicians during installation and maintenance.<\/p>\n\n\n\n

Another reason 24VDC is so widely adopted is compatibility with automation equipment. Most industrial sensors, proximity switches, photoelectric sensors, and PLC I\/O modules are designed to operate on 24VDC signals. Industry surveys from automation suppliers suggest that a large majority of new industrial machines now use 24VDC for their control circuits, largely because it simplifies integration between devices.<\/p>\n\n\n\n

Experienced control engineers often prefer 24VDC systems because they provide stable signaling for electronic components and work well with modern PLC-based architectures. When tower lights are connected to a 24VDC control circuit, they can often be driven directly by PLC outputs, which simplifies wiring and reduces the need for additional interface relays.<\/p>\n\n\n\n

As a result, 24VDC control voltage has become the default choice for many new automation systems, particularly in applications where machines rely heavily on sensors, programmable controllers, and digital control logic.<\/p>\n\n\n\n

What is 120VAC Control Voltage?<\/h2>\n\n\n\n

Before low-voltage DC systems became common in automation, many industrial machines relied on 120VAC for their control circuits. In this setup, alternating current from the facility power supply is stepped down through a control transformer and used to operate devices such as relays, contactor coils, push buttons, and indicator lights\u2014including tower lights.<\/p>\n\n\n\n

In a typical configuration, the transformer converts higher incoming voltages (such as 480V or 240V) into 120VAC control power, which is then distributed across the control wiring inside the panel. When a control device closes a circuit\u2014such as a relay contact or switch\u2014the 120VAC signal energizes the connected component.<\/p>\n\n\n\n

This approach became widely adopted in traditional motor control systems because AC control circuits were simple to design and easy to distribute throughout a machine. Many factories built in the 1980s and 1990s still operate equipment that uses this architecture. According to experienced maintenance engineers, it is not uncommon for legacy production lines to continue running 120VAC control circuits decades after installation, particularly in industries such as material handling, packaging, and heavy manufacturing.<\/p>\n\n\n\n

Another practical reason for its continued use is familiarity. Many electricians and maintenance teams have long worked with AC-based control wiring, making troubleshooting and repairs straightforward in facilities where this standard is already established.<\/p>\n\n\n\n

Because of these factors, 120VAC control voltage still appears in many retrofit projects and legacy systems, even though newer machines increasingly rely on lower-voltage DC control circuits.<\/p>\n\n\n\n

Key Differences Between 24VDC and 120VAC for Tower Lights<\/h2>\n\n\n\n

When choosing the voltage for a tower light control circuit, the differences between 24VDC and 120VAC become more noticeable in real-world machine operation and control design.<\/p>\n\n\n\n

One of the biggest distinctions is how each voltage interacts with automation equipment. Most modern PLC output modules are designed to switch 24VDC signals, which allows tower lights and other indicators to be connected directly to the controller. With 120VAC systems, additional components such as interposing relays are often required to interface with PLC outputs, which adds extra wiring and panel components.<\/p>\n\n\n\n

Another difference involves electrical noise and signal stability. DC control signals tend to be more stable for electronic devices, which is why sensors, encoders, and other digital components typically operate on 24VDC. AC control circuits can sometimes introduce noise or interference, particularly in environments with large motors or variable frequency drives.<\/p>\n\n\n\n

There are also differences in panel design and installation. A 24VDC control circuit requires a DC power supply inside the control panel, but once installed, it can power many automation devices from a single regulated source. A 120VAC control circuit, on the other hand, usually relies on a control transformer and distributes AC power directly to the devices.<\/p>\n\n\n\n

Maintenance and troubleshooting can also vary between the two systems. Many technicians find that 24VDC circuits are easier to trace and diagnose in modern PLC-based systems because the wiring closely follows the logic of the automation program. AC control circuits, however, remain familiar to electricians who regularly work with traditional relay-based control systems.<\/p>\n\n\n

\n
\"\"<\/figure><\/div>\n\n\n

Safety Considerations<\/h2>\n\n\n\n

Safety is one of the most important factors when selecting the voltage for a control circuit, especially for devices that are frequently accessed by operators or maintenance technicians. The voltage level used in the control system can directly affect the risk associated with installation, troubleshooting, and equipment maintenance.<\/p>\n\n\n\n

One reason 24VDC control circuits are widely used in modern machines is their lower shock hazard. Industrial safety practices often consider voltages below certain thresholds to be safer for human contact under normal conditions. Because 24 volts is relatively low compared to line voltage, technicians working inside a control panel<\/a> face a much smaller risk of dangerous electrical shock when interacting with these circuits.<\/p>\n\n\n\n

This safety advantage is one of the reasons many machine builders have moved toward low-voltage control architectures. Standards related to machinery design frequently encourage the use of lower control voltages whenever practical, particularly for operator interfaces and signaling devices such as tower lights, push buttons, and sensors.<\/p>\n\n\n\n

By contrast, 120VAC control circuits operate at a higher voltage, which requires greater caution during maintenance. Electricians must follow strict lockout procedures and proper insulation practices when working with these circuits. While they are still safe when installed and protected correctly, the higher voltage level increases the potential hazard if accidental contact occurs.<\/p>\n\n\n\n

Because tower lights are often connected to operator-facing systems and machine signaling devices, many modern control panel designs favor lower-voltage control circuits to improve overall workplace safety.<\/p>\n\n\n\n

Integration with Modern Automation Systems<\/h2>\n\n\n\n

As manufacturing systems become more automated, the control architecture of machines has shifted toward PLC-based control and digital communication. In these environments, the voltage used in the control circuit plays a major role in how easily devices integrate with the rest of the automation system.<\/p>\n\n\n\n

Most modern PLC input and output modules are designed to operate with 24VDC signals. This makes it straightforward to connect sensors, push buttons, safety devices, and tower lights directly to the controller without additional interface hardware. The same voltage level can be used across multiple devices in the panel, which simplifies wiring and reduces the number of components required in the control circuit.<\/p>\n\n\n\n

Automation platforms also rely heavily on electronic sensors and field devices, and the majority of these components are built to operate on 24VDC. Proximity sensors, photoelectric sensors, limit switches with electronic outputs, and industrial communication modules typically use this voltage because it provides reliable signal transmission for digital control systems.<\/p>\n\n\n\n

Another advantage is the ability to support advanced monitoring and diagnostics. In modern factories that use PLCs, SCADA systems<\/a>, or industrial IoT platforms, devices connected through low-voltage control circuits can be monitored more easily. Tower lights connected to PLC outputs, for example, can be integrated into machine status dashboards or automated alerts that notify operators when a fault occurs.<\/p>\n\n\n\n

Because of these integration benefits, many automation engineers consider 24VDC the preferred control voltage for new machine designs, particularly in facilities that rely on programmable control systems and data-driven operations.<\/p>\n\n\n\n

When to Choose 24VDC for Tower Lights<\/h2>\n\n\n\n

In many modern machines, 24VDC is the preferred choice for tower light control circuits, especially when the system is designed around PLC-based automation. Because most PLC output modules operate on 24VDC signals, tower lights can often be connected directly to the controller without additional interface components. This simplifies the control wiring and makes the system easier to expand or modify later.<\/p>\n\n\n\n

Another situation where 24VDC works well is in machines that rely on multiple sensors and electronic devices. Equipment such as proximity sensors, photoelectric sensors, safety switches, and encoder inputs typically operate on the same 24VDC supply. Using a common voltage across these devices helps maintain consistency in the control circuit and reduces the need for multiple voltage sources inside the panel.<\/p>\n\n\n\n

Machine builders also tend to favor 24VDC in applications where operator interaction and maintenance access are frequent. Since tower lights often indicate machine status to operators on the factory floor, connecting them through a low-voltage control circuit aligns with modern machine design practices that emphasize safer control systems.<\/p>\n\n\n\n

For new equipment installations or automation upgrades, many engineers choose 24VDC because it supports standardized control architectures used across modern production lines. This makes troubleshooting easier, improves compatibility with automation components, and allows machines to integrate smoothly with the rest of the facility\u2019s control systems.<\/p>\n\n\n\n

When 120VAC May Still Be the Better Option<\/h2>\n\n\n\n

Even though many modern machines use low-voltage DC control circuits, there are still situations where 120VAC remains a practical choice for tower light control.<\/p>\n\n\n\n

One common scenario is existing equipment that already operates on AC control power. In many facilities, older machines were designed with control transformers that supply 120VAC to relays, contactor coils, and indicator devices. In these cases, adding a tower light that operates on the same voltage keeps the control circuit consistent and avoids the need for additional DC power supplies.<\/p>\n\n\n\n

Another situation involves retrofit or upgrade projects. When engineers are modifying an existing machine, it is often more efficient to match the tower light voltage to the control power already available in the panel. Reworking the entire control circuit to accommodate a different voltage can increase project time, cost, and complexity.<\/p>\n\n\n\n

Some industrial environments also prefer AC-powered control devices because the power source is already readily available from the facility electrical system. In these setups, a control transformer can distribute 120VAC to several components without requiring separate power conversion equipment.<\/p>\n\n\n\n

For these reasons, many experienced electricians and maintenance teams still encounter 120VAC tower lights on legacy machinery and retrofit installations. While newer machines often adopt lower-voltage control circuits, AC control voltage can remain a practical and efficient solution when it aligns with the existing control architecture.<\/p>\n\n\n\n

Conclusion<\/h2>\n\n\n\n

Both 24VDC and 120VAC can effectively operate tower lights, but the right choice depends on how the machine\u2019s control system is designed.<\/p>\n\n\n\n

In many modern industrial machines, 24VDC has become the preferred control voltage because it aligns well with PLC-based automation, sensors, and other electronic control devices. Using a common low-voltage control system simplifies wiring and supports the type of digital control architecture used in today\u2019s automated production environments.<\/p>\n\n\n\n

At the same time, 120VAC control circuits still play an important role, particularly in existing equipment and retrofit projects. When a machine is already built around AC control power, using tower lights that operate at the same voltage can be the most practical approach.<\/p>\n\n\n\n

For engineers and panel designers, the key is to evaluate the overall control architecture of the machine. The tower light should match the voltage used by the control circuit so it integrates smoothly with the rest of the system. Making the right choice helps ensure reliable signaling, easier maintenance, and a control system that fits the needs of the application.<\/p>\n","protected":false},"excerpt":{"rendered":"

Tower lights play a simple but important role on factory floors. They provide a quick visual signal that tells operators and maintenance teams what\u2019s happening with a machine\u2014whether it\u2019s running normally, waiting for input, or stopped due to a fault. Because these lights are often connected directly to the machine\u2019s control system, the voltage used […]<\/p>\n","protected":false},"author":12,"featured_media":65585,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"inline_featured_image":false,"_mi_skip_tracking":false,"_monsterinsights_sitenote_active":false,"_monsterinsights_sitenote_note":"","_monsterinsights_sitenote_category":0,"footnotes":""},"categories":[2405,60],"tags":[],"class_list":["post-65583","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-reviews","category-unlisted"],"yoast_head":"\n24VDC vs. 120VAC: Choosing the Right Voltage for Your Tower Light's Control Circuit - BNO News<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/bnonews.com\/index.php\/2026\/03\/24vdc-vs-120vac-choosing-the-right-voltage-for-your-tower-lights-control-circuit\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"24VDC vs. 120VAC: Choosing the Right Voltage for Your Tower Light's Control Circuit - BNO News\" \/>\n<meta property=\"og:description\" content=\"Tower lights play a simple but important role on factory floors. They provide a quick visual signal that tells operators and maintenance teams what\u2019s happening with a machine\u2014whether it\u2019s running normally, waiting for input, or stopped due to a fault. Because these lights are often connected directly to the machine\u2019s control system, the voltage used […]\" \/>\n<meta property=\"og:url\" content=\"https:\/\/bnonews.com\/index.php\/2026\/03\/24vdc-vs-120vac-choosing-the-right-voltage-for-your-tower-lights-control-circuit\/\" \/>\n<meta property=\"og:site_name\" content=\"BNO News\" \/>\n<meta property=\"article:publisher\" content=\"http:\/\/www.facebook.com\/bnonews\/\" \/>\n<meta property=\"article:published_time\" content=\"2026-03-27T13:29:21+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2026-03-27T15:01:21+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/bnonews.com\/wp-content\/uploads\/2026\/03\/2020Engineer.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"1000\" \/>\n\t<meta property=\"og:image:height\" content=\"667\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"author\" content=\"Contributor\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:creator\" content=\"@bnonews\" \/>\n<meta name=\"twitter:site\" content=\"@bnonews\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"Contributor\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"12 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\/\/bnonews.com\/index.php\/2026\/03\/24vdc-vs-120vac-choosing-the-right-voltage-for-your-tower-lights-control-circuit\/#article\",\"isPartOf\":{\"@id\":\"https:\/\/bnonews.com\/index.php\/2026\/03\/24vdc-vs-120vac-choosing-the-right-voltage-for-your-tower-lights-control-circuit\/\"},\"author\":{\"name\":\"Contributor\",\"@id\":\"https:\/\/bnonews.com\/#\/schema\/person\/e3952aff283010ff6ff362dc8c40b981\"},\"headline\":\"24VDC vs. 120VAC: Choosing the Right Voltage for Your Tower Light’s Control Circuit\",\"datePublished\":\"2026-03-27T13:29:21+00:00\",\"dateModified\":\"2026-03-27T15:01:21+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\/\/bnonews.com\/index.php\/2026\/03\/24vdc-vs-120vac-choosing-the-right-voltage-for-your-tower-lights-control-circuit\/\"},\"wordCount\":2444,\"publisher\":{\"@id\":\"https:\/\/bnonews.com\/#organization\"},\"image\":{\"@id\":\"https:\/\/bnonews.com\/index.php\/2026\/03\/24vdc-vs-120vac-choosing-the-right-voltage-for-your-tower-lights-control-circuit\/#primaryimage\"},\"thumbnailUrl\":\"https:\/\/bnonews.com\/wp-content\/uploads\/2026\/03\/2020Engineer.jpg\",\"articleSection\":[\"Reviews\",\"unlisted\"],\"inLanguage\":\"en-US\"},{\"@type\":\"WebPage\",\"@id\":\"https:\/\/bnonews.com\/index.php\/2026\/03\/24vdc-vs-120vac-choosing-the-right-voltage-for-your-tower-lights-control-circuit\/\",\"url\":\"https:\/\/bnonews.com\/index.php\/2026\/03\/24vdc-vs-120vac-choosing-the-right-voltage-for-your-tower-lights-control-circuit\/\",\"name\":\"24VDC vs. 120VAC: Choosing the Right Voltage for Your Tower Light's Control Circuit - BNO News\",\"isPartOf\":{\"@id\":\"https:\/\/bnonews.com\/#website\"},\"primaryImageOfPage\":{\"@id\":\"https:\/\/bnonews.com\/index.php\/2026\/03\/24vdc-vs-120vac-choosing-the-right-voltage-for-your-tower-lights-control-circuit\/#primaryimage\"},\"image\":{\"@id\":\"https:\/\/bnonews.com\/index.php\/2026\/03\/24vdc-vs-120vac-choosing-the-right-voltage-for-your-tower-lights-control-circuit\/#primaryimage\"},\"thumbnailUrl\":\"https:\/\/bnonews.com\/wp-content\/uploads\/2026\/03\/2020Engineer.jpg\",\"datePublished\":\"2026-03-27T13:29:21+00:00\",\"dateModified\":\"2026-03-27T15:01:21+00:00\",\"breadcrumb\":{\"@id\":\"https:\/\/bnonews.com\/index.php\/2026\/03\/24vdc-vs-120vac-choosing-the-right-voltage-for-your-tower-lights-control-circuit\/#breadcrumb\"},\"inLanguage\":\"en-US\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\/\/bnonews.com\/index.php\/2026\/03\/24vdc-vs-120vac-choosing-the-right-voltage-for-your-tower-lights-control-circuit\/\"]}]},{\"@type\":\"ImageObject\",\"inLanguage\":\"en-US\",\"@id\":\"https:\/\/bnonews.com\/index.php\/2026\/03\/24vdc-vs-120vac-choosing-the-right-voltage-for-your-tower-lights-control-circuit\/#primaryimage\",\"url\":\"https:\/\/bnonews.com\/wp-content\/uploads\/2026\/03\/2020Engineer.jpg\",\"contentUrl\":\"https:\/\/bnonews.com\/wp-content\/uploads\/2026\/03\/2020Engineer.jpg\",\"width\":1000,\"height\":667},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\/\/bnonews.com\/index.php\/2026\/03\/24vdc-vs-120vac-choosing-the-right-voltage-for-your-tower-lights-control-circuit\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Home\",\"item\":\"https:\/\/bnonews.com\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"24VDC vs. 120VAC: Choosing the Right Voltage for Your Tower Light’s Control Circuit\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\/\/bnonews.com\/#website\",\"url\":\"https:\/\/bnonews.com\/\",\"name\":\"BNO News\",\"description\":\"Breaking news and developing stories from the U.S. and around the world\",\"publisher\":{\"@id\":\"https:\/\/bnonews.com\/#organization\"},\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\/\/bnonews.com\/?s={search_term_string}\"},\"query-input\":{\"@type\":\"PropertyValueSpecification\",\"valueRequired\":true,\"valueName\":\"search_term_string\"}}],\"inLanguage\":\"en-US\"},{\"@type\":\"Organization\",\"@id\":\"https:\/\/bnonews.com\/#organization\",\"name\":\"BNO News\",\"url\":\"https:\/\/bnonews.com\/\",\"logo\":{\"@type\":\"ImageObject\",\"inLanguage\":\"en-US\",\"@id\":\"https:\/\/bnonews.com\/#\/schema\/logo\/image\/\",\"url\":\"https:\/\/bnonews.com\/wp-content\/uploads\/2018\/03\/BNOLOGOTV.png\",\"contentUrl\":\"https:\/\/bnonews.com\/wp-content\/uploads\/2018\/03\/BNOLOGOTV.png\",\"width\":1696,\"height\":1443,\"caption\":\"BNO News\"},\"image\":{\"@id\":\"https:\/\/bnonews.com\/#\/schema\/logo\/image\/\"},\"sameAs\":[\"http:\/\/www.facebook.com\/bnonews\/\",\"https:\/\/x.com\/bnonews\",\"http:\/\/www.instagram.com\/bnonews\/\",\"http:\/\/www.linkedin.com\/company\/bno-news\",\"http:\/\/www.pinterest.com\/bnonewstv\/\",\"http:\/\/www.youtube.com\/bnonews\"]},{\"@type\":\"Person\",\"@id\":\"https:\/\/bnonews.com\/#\/schema\/person\/e3952aff283010ff6ff362dc8c40b981\",\"name\":\"Contributor\",\"image\":{\"@type\":\"ImageObject\",\"inLanguage\":\"en-US\",\"@id\":\"https:\/\/bnonews.com\/#\/schema\/person\/image\/\",\"url\":\"https:\/\/bnonews.com\/wp-content\/uploads\/2024\/04\/writer-blogger-author-icon-150x150.png\",\"contentUrl\":\"https:\/\/bnonews.com\/wp-content\/uploads\/2024\/04\/writer-blogger-author-icon-150x150.png\",\"caption\":\"Contributor\"},\"url\":\"https:\/\/bnonews.com\/index.php\/author\/contributor\/\"}]}<\/script>\n<!-- \/ Yoast SEO plugin. -->","yoast_head_json":{"title":"24VDC vs. 120VAC: Choosing the Right Voltage for Your Tower Light's Control Circuit - BNO News","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/bnonews.com\/index.php\/2026\/03\/24vdc-vs-120vac-choosing-the-right-voltage-for-your-tower-lights-control-circuit\/","og_locale":"en_US","og_type":"article","og_title":"24VDC vs. 120VAC: Choosing the Right Voltage for Your Tower Light's Control Circuit - BNO News","og_description":"Tower lights play a simple but important role on factory floors. They provide a quick visual signal that tells operators and maintenance teams what\u2019s happening with a machine\u2014whether it\u2019s running normally, waiting for input, or stopped due to a fault. Because these lights are often connected directly to the machine\u2019s control system, the voltage used […]","og_url":"https:\/\/bnonews.com\/index.php\/2026\/03\/24vdc-vs-120vac-choosing-the-right-voltage-for-your-tower-lights-control-circuit\/","og_site_name":"BNO News","article_publisher":"http:\/\/www.facebook.com\/bnonews\/","article_published_time":"2026-03-27T13:29:21+00:00","article_modified_time":"2026-03-27T15:01:21+00:00","og_image":[{"width":1000,"height":667,"url":"https:\/\/bnonews.com\/wp-content\/uploads\/2026\/03\/2020Engineer.jpg","type":"image\/jpeg"}],"author":"Contributor","twitter_card":"summary_large_image","twitter_creator":"@bnonews","twitter_site":"@bnonews","twitter_misc":{"Written by":"Contributor","Est. reading time":"12 minutes"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"Article","@id":"https:\/\/bnonews.com\/index.php\/2026\/03\/24vdc-vs-120vac-choosing-the-right-voltage-for-your-tower-lights-control-circuit\/#article","isPartOf":{"@id":"https:\/\/bnonews.com\/index.php\/2026\/03\/24vdc-vs-120vac-choosing-the-right-voltage-for-your-tower-lights-control-circuit\/"},"author":{"name":"Contributor","@id":"https:\/\/bnonews.com\/#\/schema\/person\/e3952aff283010ff6ff362dc8c40b981"},"headline":"24VDC vs. 120VAC: Choosing the Right Voltage for Your Tower Light’s Control Circuit","datePublished":"2026-03-27T13:29:21+00:00","dateModified":"2026-03-27T15:01:21+00:00","mainEntityOfPage":{"@id":"https:\/\/bnonews.com\/index.php\/2026\/03\/24vdc-vs-120vac-choosing-the-right-voltage-for-your-tower-lights-control-circuit\/"},"wordCount":2444,"publisher":{"@id":"https:\/\/bnonews.com\/#organization"},"image":{"@id":"https:\/\/bnonews.com\/index.php\/2026\/03\/24vdc-vs-120vac-choosing-the-right-voltage-for-your-tower-lights-control-circuit\/#primaryimage"},"thumbnailUrl":"https:\/\/bnonews.com\/wp-content\/uploads\/2026\/03\/2020Engineer.jpg","articleSection":["Reviews","unlisted"],"inLanguage":"en-US"},{"@type":"WebPage","@id":"https:\/\/bnonews.com\/index.php\/2026\/03\/24vdc-vs-120vac-choosing-the-right-voltage-for-your-tower-lights-control-circuit\/","url":"https:\/\/bnonews.com\/index.php\/2026\/03\/24vdc-vs-120vac-choosing-the-right-voltage-for-your-tower-lights-control-circuit\/","name":"24VDC vs. 120VAC: Choosing the Right Voltage for Your Tower Light's Control Circuit - BNO News","isPartOf":{"@id":"https:\/\/bnonews.com\/#website"},"primaryImageOfPage":{"@id":"https:\/\/bnonews.com\/index.php\/2026\/03\/24vdc-vs-120vac-choosing-the-right-voltage-for-your-tower-lights-control-circuit\/#primaryimage"},"image":{"@id":"https:\/\/bnonews.com\/index.php\/2026\/03\/24vdc-vs-120vac-choosing-the-right-voltage-for-your-tower-lights-control-circuit\/#primaryimage"},"thumbnailUrl":"https:\/\/bnonews.com\/wp-content\/uploads\/2026\/03\/2020Engineer.jpg","datePublished":"2026-03-27T13:29:21+00:00","dateModified":"2026-03-27T15:01:21+00:00","breadcrumb":{"@id":"https:\/\/bnonews.com\/index.php\/2026\/03\/24vdc-vs-120vac-choosing-the-right-voltage-for-your-tower-lights-control-circuit\/#breadcrumb"},"inLanguage":"en-US","potentialAction":[{"@type":"ReadAction","target":["https:\/\/bnonews.com\/index.php\/2026\/03\/24vdc-vs-120vac-choosing-the-right-voltage-for-your-tower-lights-control-circuit\/"]}]},{"@type":"ImageObject","inLanguage":"en-US","@id":"https:\/\/bnonews.com\/index.php\/2026\/03\/24vdc-vs-120vac-choosing-the-right-voltage-for-your-tower-lights-control-circuit\/#primaryimage","url":"https:\/\/bnonews.com\/wp-content\/uploads\/2026\/03\/2020Engineer.jpg","contentUrl":"https:\/\/bnonews.com\/wp-content\/uploads\/2026\/03\/2020Engineer.jpg","width":1000,"height":667},{"@type":"BreadcrumbList","@id":"https:\/\/bnonews.com\/index.php\/2026\/03\/24vdc-vs-120vac-choosing-the-right-voltage-for-your-tower-lights-control-circuit\/#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https:\/\/bnonews.com\/"},{"@type":"ListItem","position":2,"name":"24VDC vs. 120VAC: Choosing the Right Voltage for Your Tower Light’s Control Circuit"}]},{"@type":"WebSite","@id":"https:\/\/bnonews.com\/#website","url":"https:\/\/bnonews.com\/","name":"BNO News","description":"Breaking news and developing stories from the U.S. and around the world","publisher":{"@id":"https:\/\/bnonews.com\/#organization"},"potentialAction":[{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https:\/\/bnonews.com\/?s={search_term_string}"},"query-input":{"@type":"PropertyValueSpecification","valueRequired":true,"valueName":"search_term_string"}}],"inLanguage":"en-US"},{"@type":"Organization","@id":"https:\/\/bnonews.com\/#organization","name":"BNO News","url":"https:\/\/bnonews.com\/","logo":{"@type":"ImageObject","inLanguage":"en-US","@id":"https:\/\/bnonews.com\/#\/schema\/logo\/image\/","url":"https:\/\/bnonews.com\/wp-content\/uploads\/2018\/03\/BNOLOGOTV.png","contentUrl":"https:\/\/bnonews.com\/wp-content\/uploads\/2018\/03\/BNOLOGOTV.png","width":1696,"height":1443,"caption":"BNO News"},"image":{"@id":"https:\/\/bnonews.com\/#\/schema\/logo\/image\/"},"sameAs":["http:\/\/www.facebook.com\/bnonews\/","https:\/\/x.com\/bnonews","http:\/\/www.instagram.com\/bnonews\/","http:\/\/www.linkedin.com\/company\/bno-news","http:\/\/www.pinterest.com\/bnonewstv\/","http:\/\/www.youtube.com\/bnonews"]},{"@type":"Person","@id":"https:\/\/bnonews.com\/#\/schema\/person\/e3952aff283010ff6ff362dc8c40b981","name":"Contributor","image":{"@type":"ImageObject","inLanguage":"en-US","@id":"https:\/\/bnonews.com\/#\/schema\/person\/image\/","url":"https:\/\/bnonews.com\/wp-content\/uploads\/2024\/04\/writer-blogger-author-icon-150x150.png","contentUrl":"https:\/\/bnonews.com\/wp-content\/uploads\/2024\/04\/writer-blogger-author-icon-150x150.png","caption":"Contributor"},"url":"https:\/\/bnonews.com\/index.php\/author\/contributor\/"}]}},"_links":{"self":[{"href":"https:\/\/bnonews.com\/index.php\/wp-json\/wp\/v2\/posts\/65583"}],"collection":[{"href":"https:\/\/bnonews.com\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/bnonews.com\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/bnonews.com\/index.php\/wp-json\/wp\/v2\/users\/12"}],"replies":[{"embeddable":true,"href":"https:\/\/bnonews.com\/index.php\/wp-json\/wp\/v2\/comments?post=65583"}],"version-history":[{"count":1,"href":"https:\/\/bnonews.com\/index.php\/wp-json\/wp\/v2\/posts\/65583\/revisions"}],"predecessor-version":[{"id":65586,"href":"https:\/\/bnonews.com\/index.php\/wp-json\/wp\/v2\/posts\/65583\/revisions\/65586"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/bnonews.com\/index.php\/wp-json\/wp\/v2\/media\/65585"}],"wp:attachment":[{"href":"https:\/\/bnonews.com\/index.php\/wp-json\/wp\/v2\/media?parent=65583"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/bnonews.com\/index.php\/wp-json\/wp\/v2\/categories?post=65583"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/bnonews.com\/index.php\/wp-json\/wp\/v2\/tags?post=65583"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}