Kheraj engineering company manufactures a range of electrically operated sirens in different varieties. Pure ac sirens are brushless sirens. They are available in single/double mounting horizontal types. They require single phase ac 220/250 v, 2800 rpm, 50 hz power supply to operate. The motor hp ranges from ½ to 3 hp. It has audible range from 1 to 8 km. The company also offers flameproof versions.
