Relative humidity adjustment, With changeover contact, High sensitivity, Easy to use, Rail mounting Applications: Cabinet Radiators, Digital Thermometer Thermostats, Mechanical Thermostats, Humidistat Thermostats, Cabinet Fans, Breeding Temperatures, Din Radiators, Msr 3, Fans with Thermostats, Grill Temperature Control, Flat Panel Radiators, Ringder thermostat Adjustable relative humidity: the black knob is an adjustment switch that can adjust the humidity from 40% to 90%; High quality flame retardant housing: standard UL94 plastic V-0 fire rating, durable; Easy installation: the rail is installed and can be fixed in the cabinet using the conventional rail card; Description : adjustmentRelative humidity adjustment, With changeover contact, High sensitivity, Easy to use, Rail mounting Applications: Cabinet Heaters, Digital Thermometer Thermostats, Mechanical Thermostats, Humidistat Thermostats, Cabinet Fans, Breeding Temperatures, Din Heaters, Msr 3, Fans with Thermostats, Grill Temperature Control, Flat Panel Heaters, Ringder thermostat Feature: 1. Adjustable relative humidity: The black button is an adjustment switch that can adjust the humidity from 40% to 90%; 2. High quality flame retardant housing: plastic UL94 standard V-0 fire rating, durable; 3. Easy installation: the rail is installed and can be fixed in the cabinet using the conventional rail card; 4. Easy to use: 4 wiring holes can carry 10A current, and can also carry radiator and cooling fan. Specification: Brand: difference Switching difference: 4% RH (+/- 3% tolerance) Humidity range: 40% - 90% Air speed: 15m / sec Contact type: Conversion changeover contact ConversionContact resistance: 100000 cycles Minimum switch capacity: 20V AC / DC 100mA Maximum switch capacity: 250V AC 5A DC 20W EMC: Acc. according to EN 55014-1-2, EN 61000-3-2, EN 61000-3-3 Wiring: three-pole terminal block 2.5 mm2 wire Installation method: 35mm DIN rail Housing material: UL94 standard V-0 flame retardant plastic Installation size: 67 * 50 * 38mm Weight: about 60g Operating / storage temperature: 0 to + 60 C / -20 to + 80 C levelProtection level: IP20 Package Included: 1 Temperature Controller Switch