The electromechanical hygrostat MRF012 is designed to control enclosure heaters, raising the dew point when a critical relative humidity of 65% is exceeded, effectively preventing condensation and corrosion. Specifications: Switch difference: 4% RH (±3% tolerance) Permissible air velocity: 15 m/s Contact type: change-over contact Contact durability: 100,000 cycles Minimum switching capacity: 20 V AC / 100 mA DC Maximum switching capacity: 250 V AC, 5 (1) A; 20 W DC EMC compliance: EN 55014-1, EN 55014-2, EN 61000-3-2, EN 61000-3-3 Connection: 3-pole terminal for 2.5 mm² wire; clamping torque 0.5 Nm max.; solid wire 2.5 mm², stranded wire (with ferrule) 1.5 mm² Mounting: clip for 35 mm DIN rail, EN 50022 Housing material: plastic UL94 V-0, light grey Dimensions: 67 x 50 x 38 mm Installation position: variable Operating temperature range: 0 to +60 °C (+32 to +140 °F) Storage temperature range: -20 to +80 °C (-4 to +176 °F) Protection rating: IP20 Note: Item color may appear slightly different due to monitor calibration variations. Allow 1-3 mm deviation due to manual measurement. Package includes: 1 pc Humidity Controller