| Features | : | Double sensor (electrostatic sensor/vibration sensor), Electrostatic sensor detect through doorknob trigger alarm or chime or flash light, Vibration sensor detect door knock signal trigger alarm or chime or flash light, Easy installation hang the main unit on any metal doorknob, Easily hangs over the top of the door (bracket included), Alarm / off/chime switch, Flashlight on/off switch, Battery low indicator LED, Alarm sounds up to 105 dB, Vibration sensitivity high/low switch, 3 "AA" size batteries (nit included) operation with DC jack, super white (or red) LED for flashlight, Power failure LED flashlight |
