Smart Thermostatic Valve and Temperature Sensor. The Heat-Control smart thermostatic valve regulates the room temperature. The temperature sensor enables automatic heat level adjustment according to individual user preferences. The algorithms used by the thermostatic valve and the adjustable operating time intervals enable real energy savings. The special adapters included in the set allow the device to be mounted on almost all radiators available on the market. To optimize temperature control in your home, an additional sensor can be placed at a distance from the thermostatic valve. Temperature measurements from the sensor can be a reference for up to three thermostatic valves. Key features: Compatible with Z-Wave and Z-Wave Plus controllers.; Can be mounted on three valve types: M30 x 1.5, Danfoss RTD-Nand, Danfoss RA-N.; Supports Z-Wave network security modes: S0 with AES-128 encryption and S2 with PRNG encryption.; Built-in battery charged via a traditional micro-USB port. Easy assembly, no tools required.; Can be used with an outside temperature sensor.; Programmable warm-up times.; Automatic calibration.; Anti-freeze function.; Descaling function.; Power supply: 3.7 V lithium-polymer battery (non-replaceable); Charger base: micro-USB; Charger voltage: 5 V DC (5%); Min. charger current: 0.5 A; Operating temperature range (°C min./max.): 0-40; Storage temperature (standby): -10 to +25; Max. water temperature (°C): 90; Precise temperature measurement (°C): 0.5 (in the range of 0-40); Radio protocol: Z-Wave (500 series); Radio frequency (MHz): 868 ISM band (EU); Compliance with EU directives: RoHS 2011/65/EU - RED 2014/53/EU; Radio range (m): up to 40 m (depending on the building structure); Dimensions dia. x h (mm): 56 x 74 mm (without adapter) / 56 x 87 mm (with adapter); .