feature:
Easy to install: only install tape windows or doors.
The magnetic sensor switch detects the input to protect your home or office.
Warning door/window stickers are provided free of charge.
3 LR44 button battery operation (1.5V battery pack)
No wiring required
105dB instant alarm
Safety door and window
Unauthorized entry into recession
Low power standby power consumption
Instructions:
1) Secure the main unit on the door/window side with double-sided tape
Attachthe magnetic bar door frame window frame with arrow alignment / reference line with the main unit
2) Test the position of the main unit that is switched to the "up" switch system. Whether the alarm can be triggered by opening the door/window
color: White