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. Operating instructions Window/door contact 9431 The connected tubular motor keeps stopping for no apparent reason, why? What are scenes? Receive notification when the battery is almost empty.