Wireless Home Window Door Entry Burglar Security Alarm System Magnetic Sensor YL-323 [並行輸入品]

商品説明

Features:
- Super loud 90 dB alarm
- 100% brand new alarm for window or door
- Compact design, no wiring required
- Magnetism control design with steady capability
- High sensitivity can be used to protect people against stealing
- Easily mounted to windows or doors with included double-side adhesive tape
- Electronic magnetic Sensor detects entry
- Alarm is activated when the two pieces are separated
- Turn the switch to ON it sets up defense
- When someone enters or opens a door, it will send out loud voice to frighten him and warn the master
- Ideal choice to guard against thefts in house, schools, offices, and some other places
- Powered by 3 pcs 1.5V LR44 button cell

Operation Instruction:
Peel off the adhesive tape, attach the main sensor on the door / window and attach the magnetic stick adjacent the main sensor on the frame(the arrowhead side to the sensor).
Test the setup by switching on the system and see whether the alarm can be triggered by opening the door / window



Package includes:
1 x Magnetic sensor
1 x Magnetic stick
3 x LR44 button battery