The max thermostatic radiator valve enables the control of radiators on an individual basis and is a great way to get your maxsystem startedchoose programs for one or several days with up to 13 time settings per day time settings can be changed manually via the trv control knob easy to install no draining of radiators or central heating system required system can be extended by wall thermostats and using the maxcube with window sensors and eco switchthe max wall thermostat acts as