The electromechanical hygrostat MRF012 is designed to control enclosure heaters so that the dew point is raised when a critical relative humidity of 65% is exceeded. In this way, condensation and corrosion are effectively prevented.Specifications: Switch difference: 4% RH (3% tolerance) Permissible velocity: 15 m/sec Contact type: change-over contact Contact resistance: 100,000 cycles Min. switching capacity: 20 V AC / 100 mA for DC Max. switching capacity: 250 VAC, 5 (1) A for DC 20 W EMC: according to EN 55014-1-2, EN 61000-3-2, EN 61000-3-3 Connection: 3-pole terminal for 2.5 mm; clamping torque 0.5 Nm max.; rigid wire 2.5 mm; stranded wire (with wire end ferrule) 1.5 mm Mounting: clip for 35 mm DIN rail, EN 50022 Casing: plastic according to UL94 V-0, light grey Dimensions: 67 x 50 x 38 mm Fitting position: variable Operating/Storage temperature: 0 to +60C (+32 to +140F) / -20 to +80C (-4 to +176F) Protection type: IP20 Note: Item color displayed in photos may appear slightly different on your computer monitor since monitors are not calibrated the same. Please allow 13 mm slight deviation due to manual measurement.Package includes: 1 pc Humidity Controller