Permissible velocity:15m/sec Switch difference:4% (±3% tolerance) Contact type:change-over contact The electromechanical hygrostat MRF012 is designed to control enclosure heaters, so that the dew point is raised when a critical relative humidity of 65% is exceeded. In this way condensation and is effectively prevented. Contact resistance:100 000 cycles, Weight: 0.14109584768 Pounds, Manufacturer: Kueohse