Description :

 
 KERUI Wired Rolling Metal Door Magnetic Contact Sensor Detector for Home Alarm
  

 Features :

 
 Wired Metal Door Sensor.
 Connecting mode: N.C (Contacts are Open without magnet near, contacts are closed with magnet near.)
 Surface installation.
 Ideal for commercial application or industrial use.
 Max power is 10W, 0.5A.
 
 Wired Metal Door Sensor's Surface installation :
 
 Detecting door gap by opening.
 Be used to detect door if it is opened or moved.
 It is widely used for monitoring and security system, with high reliability, small size, easy installation and strong flexibility.

  

 Package includeds :

 
 1 x Wired Door Sensor
 4 x Screw
  

 Details pictures :