Jablotron JA-151ST wireless optical smoke and heat detector

JA-151ST is designed to detect the presence of fire inside residential, commercial and light industry buildings. The battery powered detector has a built-in local warning siren combined with a transparent LED indicator. The alarm information can also be transferred via a wireless connection to the Jablotron 100 system. The JA-151ST detector combines an optical smoke sensor with a heat sensor. Both sensors have their outgoing signals processeddigitally, resulting in higher false alarm immunity.

The optical sensor works using a light diffusion principle and is very sensitive to the presence of large-sized particles which are characteristic of dense smokes. By contrast, the sensor is less sensitive to small-sized particles which are typical of cleanly burning fires. In particular, thesmoke sensor is not capable of detecting the by-products of cleanly-burning fluids such as alcohols, for instance. This deficiency is compensated for by the built-in heat sensor.