WS8965W 3-zone wireless magnetic contact

Suitable for door/window mounting
3 zones in 1 (each zone has an individual serial number)
1 combination zone reed contact/magnet
Tilt switch mode for overhead doors
2 entrances per norm. closed external contacts
Long lasting lithium battery attached
13 mm. maximum magnet opening
LED indicator for low battery
Hull tamper
Reliable 868 MHz technology
Includes back plate