Yale EF-DC Easy Fit Alarm Door/Window Contact, White, DIY Friendly, Accessory for SR & EF Alarms, Suitable for Main Access Points

Great

Easy to install

It worked perfectly with my other ones so alls good

Easy to change like for like

Very easy to pair with the system and easy to fit.

Really easy to fit and link up to my current alarm system. Needed to replace the old door contact and it was a like for like replacement, so all very straight forward. Peace of mind again.

Used them for outbuildings. No issue with range. Does what it says on the tin. :)

Decided to buy extra sensors to put on all the downstairs windows, easily mountable with the included sticky pads (so no holes drilled in my nice new window frames). Easy to pair with the system and works reliably.

Excellent add on to alarm system

Easy to instal, and pair with my existing system.