Burglar Security Alarm, System Alarm Contact Magnetic Door Window for Store Magnet Sensor

【HIGH DECIBEL ALERT】: An audible alert is enough to scare an adventurous thief and hit your home or business three times. Whether you are indoors or outdoors, the magnetic sensor switch detects protection in your home or office. Magnetic door induction: When the magnet is closed, the switch is closed and the signal is connected. The signal is disconnected and the signal line is interrupted. When a person illegally slams the shutter door 2 or 3 cm, the product immediately sends a signal to the host. 【High sensitivity】: The sensitivity of the door and window alarm is high. When someone illegally opens the roller door for 2-3 cm, the product immediately sends a signal to the host. Get effective alert and anti-theft effects. Easy to install: The door and window alarms are easy to install on roller shutter doors. Easy to install, easy to install on doors and windows, ideal for residential offices, offices, shops, etc. 【HIGH QUALITY】The door and window alarm box is made of high quality ABS plastic with matte finish and high-end look. The anti-theft security alarm allows you to quickly detect anomalies.