1,Distance 3 KM 2,Alarm 130dB 3,resistant against Sawing, Prying,Drilling and Hammering 4, ... .2,T-type, Arc sharped, High security lock and key system has been engineered to be virtually impenetrable. 3, Multiple stage ... .5*43.5*33cmPacking:6pcs/ctnPackage:Blister packing High security wireless alarm lock