The JA-82ST is used to detect fire hazards in the interior of residential or commercial buildings. It is not designed to be installed in industrial premises. The JA-82ST detector uses wireless communication.
The JA-82ST consists of two independent detectors – an optical smoke detector and a heat detector. The optical smoke detector works on the principle of scattered light and is very sensitive to large dust particles which are present in dense smoke. It is less sensitive to smaller particles generated by the combustion of liquids such as alcohol. That is why there is also a built-in heat detector which has a slower reaction but is much better at detecting fire which generates heat quickly with a small amount of smoke. The microprocessor performs digital analysis of these values which markedly increases false alarm immunity.
|Power||3 x AA 1.5V; 2.4Ah alkaline batteries|
|Typical lifetime||approx. 3 years|
|Communication band||868.5 MHz, OASiS protocol|
|Communication range||approx. 300 m (unrestricted area)|
|Dimensions||diameter 126 mm, height 50 mm|
|Smoke detection||optical light scattering|
|Smoke detector sensitivity||m = 0.11 - 0.13 dB/m according to EN 54-7|
|Heat detection||class A2 according to EN 54-5|
|Alarm temperature||+60°C to +70°C|
|Operating temperature range||-10°C to +80°C|
|Complies with||EN 54-5, EN 54-7, EN 54-25|
|Also complies with||ETSI EN 300220, EN 50130-4, EN 55022, EN 60950-1|
|Can be operated according to||ERC REC 70-03|