Adopting high-tech programming integrated circuit, partial structure design which resects in convenient installation. Color luminous indicating faceplate, super and fix two tracks, it has public security, fire-control, rescue tunneling engineering. Air raid shelter, sire and megaphone functions.
1. National standrad GB8108-1999.
2. Tone charactor: MANUAL,HORN,YELP,WAIL-1,WAIL-2,HI-LO,Priority,MIC,LAMP1,LAMP2,LAMP3
3. Handhold mike, with controller.
Sound compression level: 120-130dB