2 Pack Burglar Alarm Door Contact Detectors, Wired Brown Surface Contacts - Professional Quality

• UK manufactured
• Compatible with Accenta, Optima, ADE, Gardtec, Texecom, Scantronic and many more.
• Specification Grade 1, Environmental Class 2, Operating gap approx 20mm.
• Normally closed door contacts (when door is closed circuit is closed).
• Easy installation

DETAILS Two sets of alarm surface door contacts designed to be fitted to doors or windows. Each half of the contacts measures 67mm x 12mm x 13mm approx and they have an operating gap of 20mm. As you can see in the pictures the contacts come with fitting screws. The part of the contact that has five terminals on the back, holds the magnetic reed switch. The other part of the contact holds a magnet, either an alnico V or ferrite type. The silver terminals are for the alarm circuit and the brass terminals are for connecting tamper circuits etc. SPECIFICATIONS Grade 1, Environmental Class 2 contacts with an operating gap of around 20mm, Colour brown, fixing screws included. These are normally closed contacts (when door is closed circuit is closed) and therefore work with all the leading brands of burglar alarm panels: ADE, Accenta, Optima, Texecom, Ademco, Scantronic, Gardtec, Risco etc. If you have any questions let us know.