Magnetic Door Alarm Compatible with Home Security Systems

1 Magnetic sensor switch detects entry protecting your home or office whether you are in or out. 2 Press the DEFENSE key for the alarm mode. When the door is opened, the host will issue a 125dB alarm sound, which will automatically stop after 30s. 3 Press the DOORBELL key for the doorbell mode. When the door is opened, the main unit will send a normal doorbell instead of an alarm sound. 4 Pressing the SOS key is a help-seeking mode. In an emergency, you can use the remote control to make the main unit sound an alarm to draw attention and ask for help. 5 The host side switch controls the host to start. Press the UNLOCK button on the remote control to stop the alarm sound and cancel the set mode. 6 Within 10m / 32.8ft working range, 1 remote control can control up to 10 alarms.

What's in the box
1 x Magnetic Sensor