Description

PhD low profile 800 Series conventional optical and thermal multi criteria smoke detector.The SD-851TE photoelectric smoke/ thermal detector incorporates an optical chamber and a thermal element, which in turn are continually monitored by an on board processor by using algorithms developed specifically for the unit.An alarm signal is only enabled in the detector once the processor is satisfied that an actual fire has been detected. By using a combination of inputs, the incidence of nuisance alarms is reduced while at the same time, the response time to an actual fire is also improved.