Allowed speed: 15 m/ MRF012 electromechanical hygrostat is designed to control cabinet heaters so that the dew point increases when a critical relative humidity of 65% is exceeded. This effectively prevents condensation and corrosion. Switch difference: 4% RH (±3% tolerance) Contact Type: Shift Contact Contact resistance: 100,000 cycles, Weight: 0.14109584768 pounds, Manufacturer: Rtxbvg