Bosch Security D273THC

Four-Wire Smoke Detector
Four-wire smoke detector.

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    Brand: Bosch Security FireAlarm.com Part #: 50231 Categories: , Manufacturer Part #: D273

    Description

    The D273 Family includes the following detector models:

    Model Description
    D273 Four-wire
    D273IS¹ Four-wire with an isolated 135°F (57°C) heat sensor and sounder
    D273TH Four-wire with 135°F (57°C) heat sensor
    D273THC Four-wire with 135°F (57°C) heat sensor and auxiliary relay
    D273THCS¹ Four-wire with 135°F (57°C) heat sensor, auxiliary relay, and sounder
    D273THE Four-wire with 135°F (57°C) heat sensor and EOL relay
    D273THR² Four-wire with 135°F (57°C) heat sensor and trouble relay
    D273THS¹ Four-wire with 135°F (57°C) heat sensor and sounder
    D273THES¹ Four-wire with 135°F (57°C) heat sensor, sounder, and EOL relay

    ¹   Sounders produce 85 dB at 10 ft (3 m)
    ²   The trouble relay indicates both Dirty Smoke Chamber and/or Power Loss conditions

    Each of the detector models is UL Listed and works with commercial fire protective signaling and household fire warning systems. Each model detects smoke particles produced during wood, paper, and fabric combustion.

    Information

    Weight 1.00 lbs
    Construction

    Material Qualities

    ,

    Series

    Brand

    Features

    • 12 VDC or 24VDC 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

    Resources

    D273 Photoelectric Smoke and Heat Detectors
    Bosch Security – Data Sheet – 2014
    Photoelectric Smoke Detector; D263 / D273 Series
    Bosch Security – Installation Instructions – 2006
    Smoke Detectors
    Bosch Security – Technical Service Note – 2000

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