Electromechanical siren lk-jdw450 Description Lk-jdw450 is a double-ended siren for horizontal mounting. Powered by a three phase motor. It is designed for roof or pole mounting. It can be used in: Civil defence warning systems of major cities all over the world. Fire warning systems of community, main factries, mines, buildings, forests, ect. Warning for natural disasters of earthquake, tsunami, flood, etc. Warning for accidents of reservoirs, dams, jails, airports, army, farm and pasture, etc. Please specify the voltage when placing orders with us Sound rating 130f+2db(c) @1m Three phase motor 7.5kw, 380/400/440v ac, 50/60hz Ip rating Ip44 Output frequency 500/580f+20hz Single tone Net weight146kg Carton size75x63x71cm Net weight146kg Carton size75x63x71cm