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Bosch D273THR Four-Wire Smoke Detector with a 135F Heat Sensor, Trouble Relay
D273THR Bosch Security | JMAC Supply
 

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Product Code: BOSCH-D273THR
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Bosch D273THR Four-Wire Smoke Detector with a 135F Heat Sensor, Trouble Relay


  • Also known as: DS-D273THR, BOS-D273THR

    • The Bosch D273THR four-wire photoelectric smoke detector uses an infrared (IR) LED light source and a silicon photodiode to measure light in a chamber. A fine screen covers the chamber to deter insects and to reduce dust accumulation and nuisance alarms.

    During a fire, smoke particles reflect light onto the photodiode. When the photodiode measurements exceed the alarm threshold, the D273THR signals an alarm condition. After the alarm condition clears, interrupt power at the control panel to reset the detector.

    The D273THR is equipped with a 135F (57C) heat sensor and a trouble relay.    		Features:
    • Fourwire smoke detector with a 135F (57C) heat sensor and a trouble relay
    • 12 VDC or 24 VDC input
    • Designed for commercial or residential use
    • Four-wire application
    • Light-emitting diodes (LEDs) indicate the status of the chamber, power, and alarm
    • Removable terminal block to simplify wiring connections
    • Cable connection point for voltmeter sensitivity test
    • Trim Plate TP280 for retrofit and remodeling purposes


    Technical Specifications:
    • Dimensions (Diameter x H): 5 in. x 2 in. (12.7 cm x 5.1 cm)
    • Material: High impact, fire retardant ABS plastic
    • Power-up Time: 22 sec maximum
    • RMS Ripple: 25% of DC input maximum
    • Voltage (stand-by): 10 VDC to 30 VDC
    • Current Draw: Alarm 36 mA maximum @ 30 VDC, Standby 18 mA maximum


    UPC: 782695023181

    Average rating: 4.5, based on 2 reviews


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