This Contact Works with Any Access Control or Burglar Alarm System Available
NORMALLY OPEN: When the door or window is open, the contact will give an closed signal and when the door is closed the contact will give a open (circuit) signal.
This passive infrared sensor (PIR) operates on 9-12VDC and has a form c relay output that can be hooked up normally open (NO) or normally closed (NC). It has a...
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...
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...
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...
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...
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...
20 pc Brown N.O. Recessed Door Contacts (NORMALLY OPEN) Alarm Door Window Sensors With Magnetic Reed Switch.