Bosch D273THS Four-Wire Smoke Detector with a 135F Heat Sensor, Sounder

The Bosch D273THS 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 D273THS signals an alarm condition. After the alarm condition clears, interrupt power at the control panel to reset the detector.

The D273THS is equipped with a 135F (57C) heat sensor and a sounder.

UPC: 782695023174
Also known as: DS-D273THS, BOS-D273THS

Technical Specifications: Current Draw: Alarm 78 mA maximum @ 30 VDC, Standby 0.1 mA maximum Voltage (stand-by): 10 VDC to 30 VDC RMS Ripple: 25% of DC input maximum Power-up Time: 22 sec maximum Material: High impact, fire retardant ABS plastic Dimensions (Diameter x H): 5 in. x 2 in. (12.7 cm x 5.1 cm)

For more information about the Bosch Security D273THS, please contact us.