Product Description

Double-side Adhesive tape on unit for easy mounting. Magnetic sensor switch detects entry protecting your home or office whenever somebody in or out. Up to 105 dB alarm sound. ON/OFF slide switch
Color: White
Unit size: Main Unit: Approx. 53mm x 35mm x20mm
Magnetic sensor: (12 x 50 x 14 mm)
Working  voltage: DC 4.5 voltage (3 pieces of 1.5V LR44 button cell included)

Package included:
4 x alarm unit
4 x Magnetic sensor