433MHz Wireless Door/Window Magnetic Sensor for GSM Home Security Alarm Systems
- Built-in omnidirectional antenna - The door/windows alarm with built-in antenna to strengthen the signal, make it more sensitive.
- Can't work standalone - The door detector work with home alarm system,use as alarm accessories..
- Low-voltage reminder function - When wireless door sensor is in low voltage, it will flash light all the time to remind user change the batteries..
- Magnetic sensor switch detects entry protecting your home or office. Superior circuit design, High-performance and low power consumption..