Combination thermostats for underfloor heating. There are two versions of thermostats: combination thermostats with manual control ECO16FRxx and combination thermostats that meet the Ecodesign requirements ECO16BTxx. Intelligent ECO16BTxx thermostats (6 - 30°C) can be controlled manually or with Ensto Heat Control App (Android and iOS). The Ensto Heat Control application enables calendar control, boost and holiday function, also monitoring of heating consumption. NTC-sensor 47 kohm with four metres of cable. Ambient temperature -20ºC...+30ºC. The thermostat has a two-pole switch.