Feature:
1. Wedge-shaped design alarm stops intruder from opening door.
2. Easy to operate, just put it under the door.
3. Adjustable sensitivity switch prevents tampering.
4. Features 3 sensitivity levels and extra-loud alarm.
5. 120dB high-pitched continuous siren when it is enabled.

Specifications:
Color: Silver and black as shown in the pictures .
Material: Stainless steel cover, plastic body, damping rubber bottom.
Working modes: Vibration sensor.
Volumn of the alarm: 120dB.
Three sensitivity: High, medium, low.
Battery: 1*9V battery.
Size: 14*4.5*4cm