The Environmental Sensor Homematic IP 155105A0 is a battery-powered wireless sensor designed to measure ambient temperature for smart home heating and automation systems. Manufactured by eQ-3, model 155105A0 (EAN 4047976551057), it provides temperature readings for integration with Homematic IP networks and compatible smart thermostatic systems. The compact housing measures 58 mm in width, 97 mm in depth and 71 mm in height, and it is powered by a single AA 1.5V battery, enabling flexible placement where wired power is not available.
Advantages
The sensor offers wireless temperature measurement with easy battery operation, enabling installation without wiring. Its compact dimensions allow inconspicuous placement near radiators, on shelves or walls. Being part of the Homematic IP ecosystem, the device can supply temperature data to smart heating controls and automation routines. The straightforward form factor and standardized battery type simplify replacement and maintenance.
Suitable for
- Monitoring room temperature for radiator control and smart thermostats
- Residential zones where wireless temperature sensing is required
- Temporary or permanent sensor placement in rooms without access to mains power
Key specifications
- Brand: eQ-3
- Model / MPN: 155105A0
- EAN: 4047976551057
- Power supply: AA battery, 1.5 V
- Measured parameter: Temperature
- Dimensions (W × D × H): 58 mm × 97 mm × 71 mm
- Wireless connection: Homematic IP compatible
How to use
Install one AA 1.5 V battery following the device’s battery compartment markings. Add the sensor to your Homematic IP system according to the central control unit or app instructions, using the device’s model number 155105A0 as a reference if required. Place the sensor at room level away from direct sunlight, heat sources or drafts to obtain representative ambient temperature readings. Once paired, verify that temperature data is received by the controller and assign the sensor to the appropriate room or radiator control group within the app.
Usage recommendations
For reliable temperature control, mount the sensor on an interior wall at typical occupant height and avoid locations near radiators, windows or direct sunlight. Replace the AA 1.5 V battery when battery status in the Homematic IP app indicates low charge, and follow local regulations for battery disposal.
