Stainless Steel Cover; Operating Modes: Vibration Sensor; Alarm Volume: 120dB; Three Sensitivity: High, Medium, Low; Battery 1 9V battery ( Does not include ); Size: 135 45 40mm Switch ON/OFF button.

No installation required, Simply place the alarm behind any door, easy for travelers to carry. Mini size, space-saving. Wedge-shape design to fit any door. Prevents door from opening and immediately activates an alarm.

Smart Door Open Alarm to give off siren warning once the door is push open, the 120db sharp alarming will scare away bad guys.

Adjust the pressure sensor according to different situations. An effective way of deterring intruders, the alarm activated when the door is pushed open. It ensures your safety and peace of mind wherever you go.

Usage: 1.Place this device under your door. 2. It will be activated whenever the door is open and triggered the alarm. Package included: 1 Pc of door stopper.