Viper GLX ASIC controlled Shock Sensor, Switch selectable patented Double Knock and Remote LED reset options. Dual sensitivity control, auto reset of relay contacts. First to alarm option (Viper GLX only). Integral door contact (Viper GLX with contacts only). Switch selectable patented Double Knock. Remote LED reset options. Dual sensitivity control, auto reset of relay contacts. Walk Test facility LED can be controlled remotely. 5mA quiescent. Coverage: nominally 2.5m radius. Sensitivity individually adjustable. Dimensions (h x w x d): 85 x 25 x 23mm.