Homematic IP HmIP-BWTH Wall Thermostat - 230 W Switching

Homematic IP HmIP-BWTH Wall Thermostat with Switching Output is a wired 230 V control unit for compatible floor-heating valve drives. Its front panel combines a wall-mounted thermostat with a relay output, while the device connects to the Homematic IP system by radio.

Specifications And Installation

The HmIP-BWTH uses 230 V/50 Hz supply voltage and provides a maximum switching capacity of 1 A or 230 W for ohmic loads. The specified cable cross section is 0.75-1.50 mm².

Installation is intended for standard commercial switch boxes that meet DIN 49073-1. The protection rating is IP20, and the operating temperature range is 0 to 50 °C.

Dimensions And Wireless Range

With its frame, the thermostat measures 86 x 86 x 54 mm. Without the frame, the housing measures 55 x 55 x 54 mm, and the listed device weight is 136 g.

The radio frequency bands are 868.0-868.6 MHz and 869.4-869.65 MHz. Homematic IP lists a typical open-area radio range of 130 m for the 230 V version.

System Fit And Use

The HmIP-BWTH is designed for homes with wired floor heating and 230 V actuators. Its relay output switches the heating drive, while the Homematic IP wireless connection links the thermostat with compatible system components and control profiles.

The model is identified by the short designation HmIP-BWTH, the product reference 150628A0, and EAN 4047976506286. The related HmIP-BWTH24 is a different 24 V model with a different switching rating, so the supply voltage must match the installed heating hardware.

Verdict For Floor Heating

With mains-powered operation, a 230 W relay output, IP20 protection, and a 136 g housing, the HmIP-BWTH fits a fixed floor-heating installation rather than a battery-powered radiator thermostat. Its main limit is compatibility: installation requires suitable wiring, a compliant switch box, and a compatible 230 V actuator.