Electronic Siren(Emergency Siren,Ambulance Siren) is used abroad in police Dept. Fire Dept. Ambulance and so on area !

Adopting high-tech programming integrated circuit, partial structure design which resects in convenient installation. Color luminous indicating faceplate, supper and fix two tracks, it has public security, fire-control, rescue tunneling engineering. Air raid shelter, siren and  megaphone functions .