Honeywell DT4M Grey Hard Wired Thermostat(Opentherm Smart Power)

DT4 Room Thermostats combine slim, modern design with simple functionality. They're designed to be easy to use, with features that are easy to love. DT4 Room Thermostats are designed to work with on/off and OpenTherm compatible heating and cooling appliances, such as boilers, heat pumps and district heating systems. Featuring both wired and wireless versions, they're designed to suit a variety of homes, and for a multitude of system applications. DT4 Room Thermostats can be installed as a standalone thermostat or part of a wider home comfort solution with products such as the HCC100 underfloor multi-zone controller. DT4 Room Thermostats are compatible with a range of hybrid and greener energy systems and energy-efficient solutions.