Homematic IP Window and door contact - optical

The Homematic IP window and door contact is part of the Homematic IP smart home system and reliably monitors doors and windows. For this purpose, the innovative sensor does not rely on the usual magnetic contacts, but on a sophisticated optical sensor. This eliminates the need for the otherwise additionally required magnet, which reduces the installation effort. The built-in infrared photoelectric sensor monitors the door or window and thus detects the open/closed state.

In the Homematic IP system the small sensor takes over several tasks. On the one hand it provides when airing for the automatic down-regulation of the heat supply, by it the Homematic IP radiator thermostat communicates, as soon as a window or also an external door is opened. Particularly practical here is the possibility of defining a message delay for doors used several times a day, in order to avoid constant opening and closing of the radiator valves. On the other hand, the sensor reliably monitors access to one's own four walls in the event of absence. With the alarm mode activated, the Homematic IP siren can be activated in the event of an unauthorized window opening. The app also sends a warning message to the user in the form of a push notification. This gives the user the opportunity to react promptly to the dangerous situation.

The small sensor, which weighs 30 grams, works so effectively that it can run for around two years on the power of one AAA battery. If the battery capacity runs low, the Homematic IP app alerts the user. The sensor's low weight allows it to be reliably attached using double-sided adhesive tape. This is supplied together with an additional brown cover cap and a reflector foil. If the window or door material does not permit attachment with adhesive tape, the two tiny screws supplied can be used.