Standalone Door Sensor Alarm for Home Security: Independent Door-Window-Entry-Alarm, Be used to detect door, window if it is opened or moved. Easy operation, small size and portable.

When someone opens the door or window illegally (the relative position of the primary and secondary parts changes), the alarm can issue a strong alarm, warning the intruder to leave and remind the owner. Super environmental suitability and stability. 

Ideal entry warning for homes,apartments,mobile homes,offices,hotel rooms,garages,and more!

Features:

- 100% New and high quality
- Alarm/Door Chime Selectable
- Easily mounted by adhesive. Type to window or door.
- Magnetic sensor switch detects your door or window.
- Super loud 90dB alarm. 
- Super environmental suitability and stability.
- Ideal entry warning for homes,apartments,mobile homes,offices,hotel rooms,garages,and more!

Specification:

• Operating voltage: 2*AAA battery Operated
  Standby Current: <10mA; Working Current: <70mA
  Operating temp.: -10 to +60° 
  Installation mode: wall mounted; 
  Packing box: 8.8*4*1.8cm ; Weight: 0.12Kg/pc