Wire contacts to an alarm system to alert when doors or windows are opened.
Magnetic contact sensor for doors windows.
The alarm will activate when the magnet is pulled away by the opening door or window.
You can attach alarm contact sensors to any door or window in your house or apartment and when armed you ll get instant alerts on your phone and tablet whenever they open.
Wifi door sensor window alarms for home mini door window alarm sensor wireless security alarm 2 pack magnetic door open chime contact sensor compatible with alexa google assistant white 4 1 out of 5 stars 20.
The ring alarm contact sensor expands your ring the ring alarm contact sensor expands your ring alarm and adds an extra layer of security to your home.
1 pcs door contacts surface mount nc security alarm window sensors with magnetic reed switch.
These door contact position switches dcs work with all access control and burglar alarm systems 4 1 out of 5 stars 7.
Gufastore 10pcs surface mount alarm 10w 100v 0 5a in max magnetic contact ideal for door window security with lead wire and 3m adhesive paper 4 4 out of 5 stars 77 14 99 14.