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Allen Bradley 855T Stack Lights 855T-B24DD4

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855T-B24DD4

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The 855T-B24DD4 is a combined light module and piezo sounder from Allen Bradley's 855T Stack Lights series. This component operates at 24 volts AC/DC and has a robust protection rating of IP65, making it suitable for various environments.

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2 Year DO Supply Warranty
Not an Authorized Distributor: DO Supply is not an authorized distributor for listed manufacturers or tradenames and therefore the manufacturer's warranty does not apply. All of our products come with DO Supply's 2-year warranty.
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Rockwell Disclaimer: The product is used surplus. DO Supply is not an authorized surplus dealer or affiliate for the Manufacturer of this product. The product may have older date codes or be an older series than that available direct from the factory or authorized dealers. Because DO Supply is not an authorized distributor of this product, the Original Manufacturer's warranty does not apply. While many Allen-Bradley PLC products will have firmware already installed, DO Supply makes no representation as to whether a PLC product will or will not have firmware and, if it does have firmware, whether the firmware is the revision level that you need for your application. DO Supply also makes no representations as to your ability or right to download or otherwise obtain firmware for the product from Rockwell, its distributors, or any other source. DO Supply also makes no representations as to your right to install any such firmware on the product. DO Supply will not obtain or supply firmware on your behalf. It is your obligation to comply with the terms of any End-User License Agreement or similar document related to obtaining or installing firmware.

Technical specifications for 855T-B24DD4

ManufacturerAllen Bradley
Product TypeCombined Light Modules With Piezo Sounder
Product Line855T Stack Lights
Part Number855T-B24DD4
Weight0.31 lbs (0.14 kg)
UPC611320247381
Protection RatingNEMA Type 4/4X/13 (IP65-rated)
Voltage Rating24 Volts AC/DC
Sound Module's Life Service20,000 hours
Current Consumption65 milliamperes at 24 Volts AC/DC
Lens ColorRed
Frequency Rating50 to 60 Hertz
Tone Frequency2,400 Hertz or 3,300 Hertz
Housing ColorBlack housing
Maximum Number of Connectable Light ModulesUp to 3 light modules can be connected
Lamp Life Rating7,000 hours
Light Module Output Rating31.5 lumens
Recommended Operating Temperature-25 to 70°C (-13 to 158°F)
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The Allen Bradley 855T-B24DD4 serves as a combined light module with an integrated piezo sounder, engineered for durability and efficiency. Operating on a nominal voltage of 24 Volts AC/DC, this unit ensures flexibility for various applications. Encased in black housing, it is rated for NEMA Type 4/4X/13, providing excellent protection against environmental factors such as dust and moisture, making it ideal for demanding industrial settings.

The device features a red lens and a luminous output rated at 31.5 lumens. This output is suitable for effective signaling and visibility in diverse operational contexts. The sound module attached to this system is designed to support a tone frequency of either 2,400 Hertz or 3,300 Hertz, enabling customizable auditory notifications based on user preference. Its sound module can last up to 20,000 hours, significantly reducing maintenance needs.

Current consumption stands at 65 milliamperes, ensuring efficient energy use while maintaining functionality. Furthermore, this light module can accommodate up to three additional modules, enhancing its signaling capability in larger systems. The recommended operating temperature for the 855T-B24DD4 module ranges from -25°C to 70°C (-13°F to 158°F), allowing it to perform robustly in various temperature conditions. Additionally, the lamp life is rated for 7,000 hours, providing reliable performance over extended periods. Overall, the 855T-B24DD4 effectively combines light and sound to provide comprehensive signaling solutions for automation and industrial applications.