Bosch Smart Home Door/window contact II (+M)

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Product details

The smart door/window contact II [+M] reliably detects open doors and windows and displays the status in the app. The extra-thin magnetic unit is attached inconspicuously to or on the window sash (including those with multiple glazing). The sensor is multifunctional: In the "Sustainable ventilation" service, the radiator thermostats in the room are automatically throttled back when the windows are open, saving energy and costs. As part of the alarm system, it triggers an alarm if doors/windows are opened without authorisation - and also warns of potential security breaches caused by windows/doors left open when the alarm system is activated.

The integrated button of the door/window contact II [+M] is also multifunctional: short and long button presses can be individually assigned as triggers for actions or scenarios via the app. The pause function can be used by double-clicking. This allows the window/door to be opened once without triggering an alarm or turning down the heating - practical, for example, to let the dog out briefly.

The door / window contact [+M] can be used with the current Matter standard functions in any Matter system and the respective app. Information on use is provided by the respective supplier.

Key specifications

Burglary protection category
Alarm System
Transmission type
BluetoothFunkZigBee
Compatibility
Amazon AlexaApple HomeKit

General information

Item number
52646617
Manufacturer
Bosch Smart Home
Category
Burglary protection + Alarm systems
Manufacturer no.
8750002952
Release date
5.11.2024
External links

Colour

Colour
White
Exact colour description
White

Material

Material group
Plastic
Material
Plastic

Burglary protection properties

Burglary protection category
Alarm System
Protection type (IP code)
IP45
Application range
IndoorOutdoor

Smart home features

Smart Home
Compatible
Smart home ecosystem
Amazon AlexaApple HomeBosch Smart HomeGoogle AssistantMatterZigBee
Transmission type
BluetoothFunkZigBee
Compatibility
Amazon AlexaApple HomeKit
Operating system compatibility
AndroidiOS
Control type
App ControlVoice control

Origin

Country of origin
ChinaGermany

Sustainability

Manufacturer commitment
SBTi

Voluntary climate contribution

CO₂-Emission
13.77 kg
Climate contribution
CHF 0.34

Power supply

Power supply
Battery operated

Product dimensions

Length
23 mm
Width
22 mm
Height
75 mm
Weight
38 g

Package dimensions

Length
9.30 cm
Width
9.10 cm
Height
9.80 cm
Weight
120 g

30-day right of return
24 Months Warranty (Bring-in)
11 additional offers

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Reviews & Ratings

Warranty score

How often does a product of this brand in the «Burglary protection + Alarm systems» category have a defect within the first 24 months?

Source: Digitec Galaxus
  • 30.Hama
    1.3 %
  • 30.Yale
    1.3 %
  • 32.Bosch Smart Home
    2.1 %
  • 33.Grundig
    2.4 %
  • 33.Shelly
    2.4 %

Warranty case duration

How many working days on average does it take to process a warranty claim from when it arrives at the service centre until it’s back with the customer?

Source: Digitec Galaxus
  • 1.TP-Link
    0 days
  • 5.Abus
    1 day
  • 6.Bosch Smart Home
    2 days
  • 6.Netatmo
    2 days
  • 6.Ring
    2 days

Return rate

How often is a product of this brand in the «Burglary protection + Alarm systems» category returned?

Source: Digitec Galaxus
  • 20.Burg Wächter
    3.2 %
  • 21.Aqara
    3.3 %
  • 21.Bosch Smart Home
    3.3 %
  • 23.GAH
    3.4 %
  • 23.SafetyMarking
    3.4 %
Source: Digitec Galaxus

Translation: machine translated
Very good90/100
digital home Logo
digital homeSingle testReleaseJanuary 2026
  • PositiveCompatible with Matter
  • Positivemany functions
  • PositiveColoured LED ring

    Overall, the Bosch Radiator Thermostat II +M leaves a very sophisticated impression. The combination of Matter support, precise temperature control, good features and ease of use makes the model an interesting option for anyone who wants to intelligently reduce their heating costs - regardless of whether you already use a Bosch system or prefer an open smart home based on Matter.