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Allen Bradley 855T Stack Lights 855T-B20SA1

Product image is representative; revision or series may vary. Contact us to request a specific version.

855T-B20SA1

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The 855T-B20SA1 is a transducer-style sound module from Allen Bradley's 855T Stack Lights series, designed to provide robust audible alerts. With a rated voltage of 240V AC, this module features 13 distinct tones and offers adjustable volume levels from 85 dB to 103 dB, making it suitable for varying application needs.

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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-B20SA1

ManufacturerAllen Bradley
Product TypeTransducer-style Sound Modules
Product Line855T Stack Lights
Part Number855T-B20SA1
Weight0.19 lbs (0.09 kg)
Rated Voltage240V
Voltage TypeAC
Housing ColorBlack
Module TypeSingle-tone sound module
Number Of Tones13
IP RatingIP54
Adjustable Volume Rating85 to 103 dB
Number Of Lights4
Number Of Circuits1-Circuits
Max. Operating Humidity80% (Non-Condensing)
Max. Operating Altitude1000 MSL
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The Allen Bradley 855T-B20SA1 sound module features a transducer-style design specialized for effective signaling. Operable at a rated voltage of 240V AC, this device excels in delivering clear auditory notifications across various settings. It consists of a single-tone configuration and comes with 13 selectable tones, allowing for tailored sound alerts suited to different operational requirements.

Constructed with a black housing, this module maintains a professional appearance while also providing practical protection with an IP54 rating, resisting dust and light water exposure. The adjustable volume ranges from 85 dB to 103 dB, enabling flexibility in sound levels to suit the environment and application.

Furthermore, the sound module features four integrated lights and operates on a single circuit, optimizing its performance as a visual and audio alert system. It can function effectively at humidities up to 80% in non-condensing conditions, as well as at altitudes of up to 1000 meters above sea level. These characteristics make the 855T-B20SA1 ideal for diverse signaling tasks in various industrial applications.