Wifi Door-window Sensor

Wifi Door/window Sensor Smart Door/window Wifi Sensor Magnetic Sensor Alerts You Via Push Notifications From Simple Home App When A Window Or Door Is Opened Can Create Actions With Other Simple Home Products To Turn On When Magnets Get Separated Installs In Seconds Stick Sensors Onto Surface With Included Doublesided Tape No Need To Plug In Or Charge Runs On 2 Aaa Batteries (not Included) Low Battery Alert Notifications Sent Via App No Hub Required Works Off Existing Wifi Network Not Compatible With Linux Or Windows Phones Brand: Simple Home