Danfoss Eco™ is a stand-alone radiator thermostat for residential use. Danfoss Eco™ is battery powered, compact and easy to operate with a manual hand wheel and single button. Danfoss Eco™ is programmed with a smartphone App using Bluetooth connectivity. Danfoss Eco™ is easy to install, in just 30 seconds! Adapters are available for all thermostatic valves manufactured by Danfoss and most other radiator valve manufacturers.