Homematic IP window and door contact - optical, anthracite
Detects opening and closing of windows and enables automatic lowering of heating
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 performs several tasks at once.
On the one hand, it ensures that the heat supply is automatically reduced during ventilation by informing the Homematic IP radiator thermostat as soon as a window or an external door is opened.
A particularly practical feature here is the option of defining a message delay for doors that are 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. When the alarm mode is activated, the Homematic IP siren can be activated in the event of an unauthorized window opening.
The app also sends an alert 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 notifies the user. The low sensor weight allows reliable attachment via 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 allow mounting with adhesive tape, the two tiny screws supplied can be used.
