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. 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 Casing: plastic, UL94 V-0 rated, light grey Fitting 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 Color: as shown Material: plastic Dimensions: 67 x 50 x 38 mm Package contents: 1 x Humidity Controller Note: Other items not included. Slight color variations may occur due to different production batches and lighting conditions. Measurement error allowed: ±1–3 cm.