Surface mount normally closed door and window sensor
Surface mount normally closed door and window sensor
  • SKU: 9G-2IIE-T9DZ
  • Availability: in stock Many in stock Out of stock You can purchase this product but it's out of stock

10-pcs Door Contacts Surface Mount



Doors are among the most common entry points for intruders, and having a system that immediately alerts you to any unauthorized access can be the difference between a secure home and a security breach. For tech-savvy homeowners, surface mount door contacts offer the added benefit of integrating seamlessly with most smart home security systems. This connectivity allows you to receive instant alerts on your smartphone or device whenever a door is opened, whether you're at home or away. If you have any questions, you can reach out to us about our 10-pcs surface mount door contacts to learn more.

These are the door contact sensors that are in use with any and all commercial or residential card access systems as well as all security burglar alarm system. The door position switches operate with a built an internal magnetic reed switch that closes when the opposing magnet comes within ¾” of the door sensor. Hence when the door opens beyond the ¾” point the door position switch will switch from a closed signal to an open signal. When this happens the access control system or alarm system will sense the change in continuity and will know that the door or window has been opened. When the door or window shuts, the door sensor will notify your security system that the opening has been closed.


  • 10 Brown ABS Surface Mount Normally Closed Door Contact Switch
  • .2 Amp Maximum Switch Current
  • Will make Sense Door Closer at Roughly ¾” or 15mm
  • This Contact Works with Any Access Control or Burglar Alarm System Available
  • NORMALLY CLOSED: When the door or window is open, the contact will give an open signal and when the door is closed the contact will give a closed (circuit) signal.