An adjustable set point, solid state On/Off sensor. A pullcord provides manual override, indicated by lamp. Adjustable from 65 to 90%RH. Can be wired into controller "Auto" mode connections. Incorporates changeover switch to select low/high speed. Features & Benefits: Ambient operating temp range 0°C to +40°C. BEAB Approved. Dimensions: 87 x 87 x 33mm (H x W x D). Maximum switching load 1 amp inductive. Pullcord override indicated by lamp. Setting Range: 65% - 90%RH. Supply voltage 220-240V/1/50Hz.