... Rated Voltage: 12V 3.Rated Impedance:6Ω Wenzhou Haian Electronic Appliance Co., LTD. is a manufacture which specialize in the production of ... Emergency Light bars, Led Super Brightness light bars, Strobe Lights, Electronic sirens and Speakers, signal equipment,Police Equipment, and Safety & ... and technical team .Welcome to cooperate with us ! Police electronic siren speaker Hexagonal cooling type