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 Electrical endurance: 100,000 cycles Minimum switching capacity: 20 V AC/DC, 100 mA Maximum switching capacity: 250 VAC, 5 (1) A; 20 W for DC EMC compliance: EN 55014-1, EN 55014-2, EN 61000-3-2, EN 61000-3-3 Connection: 3-pole terminal for 2.5 mm wire; clamping torque 0.5 Nm max.; solid wire 2.5 mm, stranded wire with ferrule 1.5 mm 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 type: IP20 Note: Item color may appear slightly different on various monitors due to display calibration variations. Please allow 13 mm variation due to manual measurement.Package includes: 1 pc Humidity Controller