Wavin/Heatmiser Osma RT-NV3 underfloor heating wall thermostats. Each thermostat operates on 12 V DC and is designed for underfloor heating systems with volt-free switching (30 V DC 3 A max). Programmable digital thermostat with LCD screen, suitable for Wavin/Heatmiser underfloor heating control networks. Units are in full working order and excellent condition and include the original backplate for installation. These thermostats were removed from our house during a recent heating system upgrade. They are wired units requiring a 12 V DC power supply and must be installed by a qualified person. Offered as a multi-quantity listing – price is per thermostat. I have 11 available. Will be securely packaged for shipping. Any questions, please ask.