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Bosch Smart Home Relay – Smart control for electrical devices
- Switches electrical devices through potential-free contact – ideal for garage doors, ventilation systems, pumps, sockets and lighting
- Flexible control via switch/button, app, voice, scenarios, automation or time programs
- Invisible installation behind switches/buttons, in junction boxes or weatherproof installation boxes (IP66)
- Extending the wireless range as a repeater for Bosch Smart Home devices
- With Bosch Smart Home Controller II as Matter Bridge compatible with all Matter Controllers
- Safety features: Overheating protection with automatic shutdown and notification
- Easy installation with detailed step-by-step instructions in the Bosch Smart Home app
Universal switching solution for your smart home
The Bosch Smart Home Relay makes electrical devices smart by enabling their switching via a potential-free contact. Whether garage doors, ventilation systems, pumps, sockets, or lighting – this relay allows for intelligent control of a wide variety of applications. It can be installed invisibly behind existing switches or in junction boxes, eliminating the need for additional visible components.
Flexible control options
The relay can be operated according to your needs: manually via conventional wall switches or buttons, via app control, via timer programs, or via voice commands with Amazon Alexa, Google Assistant, or Siri. You can also integrate it into automations and scenarios to link it with other smart home devices.
Two operating modes for maximum customization
The Bosch Smart Home Relay offers two different modes:
- On/Off mode: Allows manual switching on and off as well as control via time programs.
- “Surge” mode: Sends a short pulse to central impulse relays, for example for stairwell lights or garage doors.
Extending the radio range
As an additional feature, the relay acts as a repeater for Bosch Smart Home devices. This amplifies the wireless signal and allows devices to be used even in more distant rooms, such as the basement or garage.
Maximum safety and reliable function
The smart relay continuously monitors its temperature and automatically shuts off if it overheats. A corresponding notification is sent directly to the Bosch Smart Home app. Furthermore, the integrated child lock ensures that manual switches or buttons can be locked if necessary.
Easy installation and high compatibility
Installing the Bosch Smart Home Relay is straightforward and can be done using the step-by-step instructions in the app. Its compact design (40.5 × 47 × 22 mm) allows installation in standard flush-mounted boxes with a minimum depth of 50 mm. A permanent 230V power supply with a single conductor and a neutral conductor is required.
Technical data
Characteristic | Details |
---|---|
Device type designation | BMCT-RZ |
Protection class | IP20 |
Protection class | II |
Device protection | Temperature fuse |
Ambient temperature | -20 °C to +50 °C |
Housing dimensions (W × H × D) | 40.5 × 47 × 22 mm |
Weight | 40 g |
radio frequency band | 2.4 – 2.4835 GHz |
Radio protocol | ZigBee 3.0 and Matter over Bridge |
Max. transmission power | 10 dBm |
Radio range in open field | < 70 m |
Supply voltage | 230 VAC / 50 Hz |
Power consumption sleep mode | < 1 W |
Cable type and cross-section | Rigid and flexible cable, 0.75 – 2.5 mm² |
Max. switching capacity | 4 A, cos ϕ 0.85~1; 400VA; 2,990W |
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