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

Excellent add on to alarm system

Easy to fit on doors or windows. What more can I say?

Easy to install

Good quality product

Extremely easy to install, easy to replace batteries, and easy to control once set up. The batteries also lasted me a year before I had to replace them so thats a good benefit to these. Not much to it, they do their job properly, no complaints yet even after a year use.

Excellent piece of kit

Overall i am a fan of Yale products. I have had a telecom unit which has been lasting for a few years. However, only this door contact does not last long enough (PIR sensor is fine for example), and battery life also not impressive. Cant be more than 3 stars...

Easy to fit, but I had to replace the same one with this one after just over 2 years use, so not impressed with its reliability, hence only 3 stars.

This thing makes my alarm go off when the door is opened. That was why I bought it.

Rather expensive for what you get. However, easy to add to my existing system and the adhesive pads I was worried wouldnt stick were actually very good.