Description

The Addressable Multipoint ASD is a plug-in type smoke detector that utilizes a photo-electric sensing chamber to make a measurement corresponding to smoke density. The device also incorporates a thermistor sensing circuit to allow for accurate heat measurement. These elements allow the device to be configured to one of 3 smoke, 3 heat or a combined setting. The device can also be fitted with an integral sounder or sounder/strobe capable of providing one of 7 different tones, operating at 65, 80 or 85dB(A) dependant on programming. This feature reduces the requirement for fitting extra annunciation devices. The detector is designed with a single colour red LED to indicate the device status; 400ms flashing indicates that the detector has been activated, 5 second flashing indicates the detector is in fault and 20 second flashing indicates a normal condition. Short circuit isolators are also built into the device in order to protect the system in the event of a cable fault.