Insteon Door/Window Sensor
Overview: Wireless Door/Window sensors. Great for push notifications with the Insteon Hub. “Door – Open” “Door – Closed”
Model# 2843-222. Price $34.99
https://www.smarthome.com/insteon-2843-222-wireless-open-close-sensor.html
Quick Start Guide http://cache-m2.smarthome.com/manuals/2843-222-qsg-1.9-after.pdf
Manual http://cache-m2.smarthome.com/manuals/2843-222-manual-1.9-after.pdf