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 DC Max. switching capacity: 250 VAC, 5 (1) A; 20 W DC EMC: according to EN 55014-1-2, EN 61000-3-2, EN 61000-3-3 Connection: 3-pole terminal for 2.5 mm²; clamping torque 0.5 Nm max.; rigid wire 2.5 mm²; stranded wire (with wire end ferrule) 1.5 mm² 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 +60°C (+32 to +140°F) / -20 to +80°C (-4 to +176°F) Protection type: IP20 Note: Item color displayed in photos may vary slightly on your computer monitor as monitors are not calibrated identically. Please allow 1–3 mm slight deviation due to manual measurement. Thank you. Package includes: 1 pc Humidity Controller