Magnetic Security Alarm Sensor for Home Windows and Doors

1 105dB high volume door window alarm with very loud siren in the compact body, clear to hear. 2 Magnet and vibration triggered alarm sounds when window or door is opened. 3 Made of premium ABS plastic, durable to use. 4 Long battery life, eliminating the need to change batteries frequently. 5 Alarm / continuous alarm / door closing reminder / doorbell four in one intimate design, suitable for a variety of use environments.

What's in the box
1 x Security Alarm System