Ecor Pro\'s EPHUM24DT humidistat for Ecor Pro models DH8xx & DH12xx and Inox types of the same only (DryFans) All DryFan units have a humidistat built in but if they are placed in a roof void, under a floor or hidden in a cupboard then this humidistat will give a faster reaction time to humidity change. Low voltage so safe for use in the bathroom area only 12V signal through a 2 core wire. Comes as a complete set with humidistat, 5m of cable and small plug for quick connecting to the Ecor Pro models. You set the humidity level of the environment you want to dry by a simple dial. For instance 70% is a high relatively humidity (damp) while for instance a setting of 40% can be considered a relatively low humidity level. Plug and play use. Please note tolerance factor on the humidistat can be up to +/- 5% to that of the value shown on the control dial.