The Pyrotector Model 30-3003 Explosion Proof Smoke Detector is a sensitive yet rugged protection device that is designed for use in hazardous industrial and commercial locations.
The Thermotech 302 Series rate-anticipation heat detec- tors operate within a controlled range of two to three de- grees of their set points, regardless of the speed or rate of temperature rise.
HN-IA480 is a high efficient Power/Booster amplifier provides audio signal amplification for public address and voice alarm system, It is reliable,efficient and light in weight