Bosch Smart Home door/window contact II [+M], sensor for energy efficient heating and burglar alarm, flexible use in the system or manufacturer independent Matter systems

Smart sensor: reliably detects open doors and windows, shows their status in the app and serves as a trigger for actions or scenarios in the smart home thanks to the integrated button Save on heating costs: Window sensor detects open windows, enabling the smart radiator thermostats to be automatically turned down via the “Sustainable ventilation” service to save energy and money Break-in protection: Once integrated into the Bosch Smart Home alarm system, the door and window alarm is triggered when it senses the unauthorised opening of doors and windows Flexible use: Can be integrated into the Bosch Smart Home system with the Bosch Smart Home controller or into any Matter system without a controller; you can select the type of use during installation Discreet design: The door/window sensor with an extra-thin magnet (3 mm) fits into the overall living environment in an unobtrusive manner and can be fitted to window frames with multiple glazing Maximum added value: You need a Bosch Smart Home controller to integrate the device into your Bosch Smart Home system

- This Bosch sensor lets you check the status of your door and window using Bosch Smart Home App - Left a window open? Just ask Siri, Alexa, or Google Assistant and get the lowdown instantly - With the ventilation service, it helps reduce energy waste by managing heating - Stick it on any door or window, it is weatherproof, so it won't mind a bit of drizzle - Pause the sensor when you're popping in and out, or use the button as a smart control for other devicesPlease note: The Bosch Smart Controller (sold separately) is required to connect your smart home devices