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

As it says on box. Easy to fit and use

These work fine but its almost impossible to change the battery without damaging the unit. The plastic holding in the battery tends to chip off.

Very happy and totally recommend

love this for peace of mind and safety. We brought it to go with the full Yale alarm system as an extra. Works well and easy to install.

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.

I would recommend the Yale alarm system. Easy set up and use. Instructions well written and no problem to follow. Accessories easy to source and well priced.

Bought as an extra door contact for my existing Yale Easy Fit 2 alarm and worked a treat. Came with all the necessary fixings and was cheaper than elsewhere.

Had these fitted a while now, no problems

Sistema magnetico subito riconosciuto dallallarme. Installazione rapida e semplice. Si può installare su qualsiasi finestra/porta, ci sono i sistemi per adattarlo a misure diverse. Consigliato

Good quality item does exactly what sad on the box fits on most Windows and if not is easilly adapted to fit.