The electromechanical hygrostat MRF012 is designed to control enclosure heaters to raise 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 or DC, 100 mA. Maximum switching capacity: 250 V AC, 5 A (1 A for DC, 20 W). 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; suitable for rigid wire up to 2.5 mm² or stranded wire up to 1.5 mm² with ferrule. Mounting: clip for 35 mm DIN rail according to EN 50022. Housing: plastic, UL94 V-0 rated, light grey. Installation position: variable. Operating temperature range: 0°C to +60°C (32°F to 140°F). Storage temperature range: -20°C to +80°C (-4°F to 176°F). Protection type: IP20. Note: Due to different production batches, slight variations in color or appearance may occur and do not affect functionality. Color: as shown. Material: plastic. Dimensions: 67 x 50 x 38 mm. Package contents: 1 x Humidity Controller. Only the listed item is included; other items are not part of the package. Note: Lighting effects and display settings may cause minor color differences between the product image and the actual item. Measurement tolerances may vary by ±1–3 cm.