Ensure consistent home comfort you can control from anywhere with this Danfoss TPOne-S Smart Programmable Room Thermostat + DBR Boiler Relay. This intuitive programmable thermostat connects to the TPOne Heating smart phone app to put heating control in the palm of your hand. This on-the-go control results in optimal energy efficiency and comfort for your home. The thermostat’s back-lit display and easy read icons make checking your heating’s status totally simple. Installation of the TPOne-S is also simplified thanks to the supplied matched DBR boiler relay, which is remotely switched for maximum ease.