Bosch D283A Photoelectric Smoke Detector Head with 135 Fixed Temperature Heat Sensor

The Bosch D283A photoeletric smoke detector head with a +135F (+57C) fixed temperature heat sensor detects the large smoke particles which typically result from wood, paper, and fabric combustion. The detector is compatible with 24 VDC circuits.

The D283A has two components: the detector base and the detector head. The base is permanently attached and wired to a back box. The interchangeable heads quickly detach for replacement and cleaning without affecting circuit wiring.


Also known as: BOS-D283A

Technical Specifications: Voltage (input): 24 VDC nominal; Two-wire: 15 VDC to 33 VDC Four-wire: 17.7 VDC to 33 VDC Current (supervisory): 0.045 mA at 24 VDC Current (start-up): 0.16 mA maximum at 24 VDC Current (alarm): Depends on detector base; refer to pertinent base specifications Material: PC/ABS blend (polycarbonate/polyacrylonitrile butadiene styrene) Color: Bone white Temperature (operating): +32°F to +100°F (0°C to +38°C) Relative Humidity: Up to 93%, non-condensing

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