Homematic IP Starter Set Heizen HmIP-SK16-2 - 400 m Radio Range

Homematic IP Starter Set Heizen HmIP-SK16-2 is a smart radiator heating starter kit built around an access point and radiator thermostats. Its access point measures 118 x 104 x 26 mm, while each thermostat measures 57 x 68 x 102 mm.The manufacturer's English product page lists the system dimensions and heating functions.

What Comes in the Set

The set uses the Homematic IP Access Point HmIP-HAP and radiator thermostats identified with the HmIP-eTRV-B designation. The documented package includes the access point, a plug-in power supply, a network cable, radiator thermostats, Danfoss RA adapters, batteries, mounting accessories, and an operating manual.The product datasheet identifies the included hardware and installation materials.

The product reference is 156537A0, and the short designation is HmIP-SK16-2. The access point accepts a 5 V supply, while its included adapter accepts 100 V-240 V at 50 Hz.The technical data sheet lists the electrical specifications and product reference.

Radio Range and Installation

The access point has a stated free-field radio range of 400 m. The radiator thermostat's stated free-field range is 250 m, and its valve connection uses an M30 x 1.5 mm thread.

Each radiator thermostat uses two 1.5 V AA batteries, identified in the technical documentation as LR6/Mignon cells. Typical battery life is listed as 2 years, and the thermostat is specified for an ambient temperature range of 0 to 50 degrees Celsius.

The access point communicates with Homematic IP devices over the 868.0-868.6 MHz and 869.4-869.65 MHz bands. The system supports app-based heating control, while compatibility depends on the radiator valve and the local installation.

Position in Smart Heating

HmIP-SK16-2 is designed for homes using water-based radiators with compatible valves rather than a forced-air furnace as the primary heating interface. The M30 x 1.5 mm connection and included Danfoss RA adapter define the installation scope more precisely than the general smart-home label.

The access point supplies the network connection for the Homematic IP system, and the thermostats provide room-level radiator control. The access point's 118 x 104 x 26 mm enclosure is substantially larger than the 57 x 68 x 102 mm thermostat housing, so the two components serve different physical roles.

Verdict for Radiator Homes

Homematic IP Starter Set Heizen HmIP-SK16-2 fits users who need app-controlled radiator heating and whose valves accept the documented connection or an included adapter. Its 5 V access point, 2-year typical thermostat battery life, and 250 m thermostat free-field range define the practical hardware profile; forced-air homes and incompatible valves fall outside that profile.