Does the window/door contact lose the connection to the registered devices when the battery is empty (and needs to be changed)? Y. Beenen Updated April 03, 2024 08:27 Follow No, all device connections are retained when the battery is changed. Related articles My HomePilot does not update the status of the window/door contact. What commands does the window/door contact send when you connect it directly (without HomePilot) to actuators, radio tubular motors, belt winders or thermostats? How around must the window/door contact be mounted? What does the inverted mode mean for the window/door contact ?