Hygrostat, Contact Rating 5, Switch Action Closes on Rise, Opens on Fall, Switch Type SPST, Control Range 50 to 100 Percent RH, Humidity Differential 4 Percent, Includes DIN Rail, Mounting Hardware and Instructions, Overall Depth 2 3/4 in, Overall Height 2 3/4 in, Overall Width 7/8 in, Mounting Location DIN Rail, Standards CE