
856T-BT4 Comparison
| photo | price | summary | rating |
|---|---|---|---|
![]() | $50.00 | Condition is New, Allen Bradley 856T-BT4 70 mm Stack Light, Light Module, Steady LED, Red, shipping cost = $13.70 | 100.0% |
![]() | $69.00 | Condition is New, Allen Bradley 856T-BT4 LED Steady Red Stack Light 24V-New In Box, FREE SHIPPING | 100.0% |
![]() | $73.00 | Top Pick! Condition is New, ALLEN BRADLEY 856T-BT4 STACK LIGHT SER. A 856TBT4 NEW, shipping cost = $8.00 | 100.0% |
![]() | $121.46 | Condition is New, 856t-bt4 Allen Bradley W/ 865T-BAC3 BASE W/ 856T-BMASN NEW, shipping cost = $8.95 | 99.7% |
![]() | $129.99 | Condition is New, *New In Box* Allen Bradley 856T-BT4 /A 70mm Sound Module 16 Tone Tables, shipping cost = $9.99 | 99.1% |
![]() | $192.83 | Condition is New, 856T-BT4, Allen Bradley, Light Module 70 mm Stack Light red, shipping cost = $16.72 | 100.0% |
| photo | price | summary | rating |
|---|---|---|---|
![]() | $64.99 | Condition is New – Open box, ALLEN BRADLEY 856T-BT4 Ser A Red Steady LED Stack Light w/ Yellow Light Casing, FREE SHIPPING | 99.9% |
![]() | $79.95 | Condition is New – Open box, NSSP Allen Bradley 856T-BT4 Light Module 70 mm Steady Red Stack Light 24VAC/DC, FREE SHIPPING | 100.0% |
![]() | $90.00 | Condition is New – Open box, Allen Bradley stack light, 856T-BT4, I have other colors also listed on eBay NNB, FREE SHIPPING | 100.0% |
![]() | $85.00 | Condition is New – Open box, ALLEN BRADLEY STACK LIGHT SER. A 856T-BT4 856TBT4 NEW, SURPLUS, shipping cost = $15.79 | 100.0% |
![]() | $105.44 | Condition is New – Open box, Allen Bradley 856T-BT4 Stack Light 856TBT4, FREE SHIPPING | 99.9% |
![]() | $95.00 | Top Pick! Condition is New – Open box, ALLEN BRADLEY 856T-BT4 STACK LIGHT SER. A 856TBT4 NEW, SURPLUS, shipping cost = $15.79 | 100.0% |
![]() | $100.00 | Top Pick! Condition is New – Open box, Allen Bradley 856T-BT4 Red Stack Light, Ser.A, shipping cost = $17.41 | 100.0% |
![]() | $126.00 | Condition is New – Open box, ALLEN BRADLEY 856T-BT4 SER. A 24VAC/DC (WH) NSMP, FREE SHIPPING | 99.9% |
![]() | $128.69 | Condition is New – Open box, ALLEN BRADLEY 856T-BT4 STACKLIGHT BASE, shipping cost = $7.44 | 99.7% |
![]() | $151.20 | Top Pick! Condition is New – Open box, ALLEN BRADLEY 856T-BT4 SERIES A INDICATOR LIGHT, shipping cost = $7.44 | 99.7% |
![]() | $150.00 | Condition is New – Open box, Allen Bradley 856T- Series A LED Stackable Light Modules BT3, BT5, BT4 GR.-AMB-R, shipping cost = $10.00 | 100.0% |
![]() | $196.99 | Condition is New – Open box, Allen-Bradley 856T-BT4 70MM Stack Light Steady LED RED One Circuit 24V AC/DC, FREE SHIPPING | ![]() |
![]() | $329.99 | Condition is New – Open box, Allen Bradley 856T- Series A LED Stackable Light Modules BT3, BT4, BT5, BT6, FREE SHIPPING | 99.4% |
| photo | price | summary | rating |
|---|---|---|---|
![]() | $89.00 | Condition is Used, Allen Bradley 856T-BT4 Series A Red Steady LED 24V AC/DC 58mA, shipping cost = $7.65 | 100.0% |
![]() | $81.44 | Condition is Used, Allen Bradley 856T-BT4 RED Steady LED 24V AC/DC 58mA w/ 856T B24C BMA-P10, shipping cost = $16.45 | 99.8% |

The Allen-Bradley 856T-BT4 70 Stack Light Module from Rockwell Automation is a versatile and reliable signaling solution designed for various industrial applications. This steady LED circular stack light is part of Allen-Bradley's PowerFlex Controls product line and is well-known for its durability and robustness.
The 856T-BT4 light module is a 70 mm diameter circular design, capable of accommodating up to 11 individual light segments. Each segment can be independently programmed to display a distinct color, making it an excellent choice for complex signaling requirements. The steady LED design provides bright and consistent illumination, ensuring clear and unambiguous visual communication.
This Allen-Bradley light module is designed for use with 24 Vdc power supplies, and its rugged construction features a sealed housing that provides protection against dust, water, and other harsh industrial conditions. The IP66-rated design ensures reliability in challenging environments, making it suitable for use in industries such as manufacturing, automotive, oil and gas, and more.
The 856T-BT4 is easy to install and integrate into existing control systems, thanks to its simple wiring configuration. It can be mounted on a DIN rail or directly to a panel using the provided mounting hardware. The light module is also compatible with various Allen-Bradley and third-party control systems, providing flexibility in system design and integration.
The Allen-Bradley 856T-BT4 70 Stack Light Module is an essential component for industrial control and signaling systems that require clear and reliable visual communication. Its versatility, durability, and compatibility with various control systems make it an excellent choice for applications where precise and consistent signaling is crucial.
Allen Bradley 856T-BT4 70 Stack Light Module with Steady LED: A Detailed Analysis
The Allen Bradley 856T-BT4 70 Stack Light Module with Steady LED is a popular choice for industrial automation applications. Let's examine the key features, advantages, and disadvantages of this product to help you make an informed decision.
Features:1. The 856T-BT4 is a 70-point, 7-segment, steady-on LED indicator module designed for use with Rockwell Automation's ControlLogix and CompactLogix PAC systems.
2. Each point features a red LED, and the module can display both decimal and hexadecimal numbers.
3. It has a wide operating temperature range of -40 F to 140 F (-40 C to 60 C).
4. The module is DIN-rail mountable and has a compact design for easy installation.
5. It includes a diagnostic LED and a test mode for troubleshooting.
Advantages:1. Versatility: The Allen Bradley 856T-BT4 can be used in various applications, including process control, machine monitoring, and data acquisition systems.
2. Easy installation: Its compact design and DIN-rail mounting make it a quick and easy addition to your control system.
3. Reliability: Allen Bradley is a trusted brand known for producing high-quality industrial components, ensuring long-term performance and durability.
4. Flexibility: The module can display decimal and hexadecimal numbers, providing more options for system configuration.
5. Cost-effective: The 856T-BT4 is a cost-effective solution for adding indicator lights to your control system.
Disadvantages:1. Limited display options: The steady-on LED design may not offer as much visual information as other display types, such as segmented bar or alphanumeric displays.
2. Compatibility: This module is specifically designed for use with Rockwell Automation's ControlLogix and CompactLogix systems, limiting its compatibility with other PAC platforms.
3. Power consumption: LED lights consume less power than incandescent bulbs, but they still consume electricity continuously when lit.
Conclusion:The Allen Bradley 856T-BT4 70 Stack Light Module with Steady LED is a reliable, cost-effective, and versatile solution for industrial automation applications requiring steady-on indicator lights. Its compact design, easy installation, and wide temperature range make it an excellent choice for various control systems. However, its limited display options and compatibility with only Rockwell Automation PAC systems may be a disadvantage for some users. Ultimately, the decision to purchase this module depends on your specific application requirements and existing control system platform.
Recommendation:If you are working with a Rockwell Automation ControlLogix or CompactLogix system and need a cost-effective, reliable, and easy-to-install solution for adding steady-on indicator lights, the Allen Bradley 856T-BT4 70 Stack Light Module with Steady LED is an excellent choice. However, if you require more advanced display options or compatibility with other PAC platforms, you may want to consider alternative solutions.
Details:
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Allen Bradley 856T-BT4 70mm stack light,: light module, steady led, red, one circuit,: 24v ac/dc: title: light, circuit, ac/dc, model: 856T-BT4, brand: Bradley, mpn. Quality guarantee.
specifications faclighting:
- brand: Allen Bradley
- mpn: 856t-bt4
- part type: Light Module
general faclighting:
- category: Business & Industrial > Maintenance Safety > Facility > Lights Lighting
seller faclighting:
- # reviews: 19698
- city: ventura, california
- rating: 99.8%
returns faclighting:
- method: money back
- paid by: buyer
- policy: returns accepted
- time: 60 days
offer faclighting:
- availability: in stock
- prices: $50.00–$329.99
- item condition:
- New
- New – Open box
- Used
- options: ship-to-home
- sold #: 21
- in stock #: 5
- best offers: true
- started: march 24, 2025
payments faclighting:
- credit card: visa
- other
- wallet: paypal
shipping faclighting:
- class: standard, expedited
- service: usps first class, usps priority mail padded flat rate envelope, usps priority mail express flat rate envelope
- carrier: usps
- type: fixed
- transit: 3-8 days
Grouped With:
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- 855T-BCB: LIGHT, Allen Bradley
- 2034039: , Allen Bradley
- 2034038: , Allen Bradley
- 8200C973: , Allen Bradley
- 8200C1307: , Allen Bradley
- 8200C823: , Allen Bradley
- 8240C038: , Allen Bradley
- 13IP65: LIGHT, Allen Bradley





















