Knight is the market-leading UK manufacturer of wired magnetic contacts.
Magnetic Contact Detectors can easily be added to your wired alarm system using as little as 2 core cable.
Ideal for protecting doors, windows, cupboards, and drawers.
separated from the magnet, i.e. when a door is opened.
The D20 is a basic 5 screw surface contact.
Two nickel screws to govern the reed switch and 3 spare brass screws for any custom requirements.
- 5 screw terminals
- Operating gap up to 20 mm
- Grade 1
- Dimensions: H 67 mm x W 14 mm x D 12 mm