This product is the Polypipe PB00401 Underfloor UFH Valve Actuators, designed for a hot water underfloor heating system. It operates on 230 volts of power and is a corded electric heating system component meant to be used with a boiler. The actuators are 2 wire with a power output of 2.5 watts. These are in full working order taking from a fully functional system due to an upgrade These come with various cable lengths. Please select the required length from drop down menu. Please allow and error margin of +/- 3mm for Cord measurements NO WARRANTY NO RETURNS NO TECHNICAL SUPPORT: ONLY BUY IF YOU KNOW HOW TO INSTALL THE ACTUATOR.