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

Does the job

This was a replacement unit for a faulty one. The specification is and exact match for the one it replaced and fits in the previously hole drilled in the door.

Very easy to fit, really good piece of kit

Cheap and cheerful

handy extra sensor for other doors/windows

Absolutely fine

Easy to install

Easy to set up with rest of smart living system

Bought these as an extra.....Easy to fit and add to youre system.

Works sound, easy to use and it was easy to connect to the hub so no drama, only issue after 2 days battery run out, but flew the pound shop and brought some batterys, had it changed in minutes,since then sweet as a nut,