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

Very good

These products are great. I have them installed on every external door in the house. That is my front, back, utility, conservatory and garage door. I have programmed them all to beep on the control panel any time the contact is removed so I know when doors are opened in the house, even if the alarm is set or not. good range on them too. Battery life so far lasted 12 months!

Great replacement for broken unit. Easy to install and compatible with my alarm.

does what it is supposed to do. Easy to fit.

Easy to add. Less than 5 minutes to get it working.

excellent item - got on a special offer price

these addons to my system were easy to fit and work perfectly as does the whole system would recomend

Absolutely fine

works perfectly and so simple to install

Just Yale.