110-220V 00 percent - 99 percent RH digital humidity controller Humidity Moisture Control Switch Socket Outlet EU Plug Hygrostatspecifications: Moisture Range: 00 percent - 99 percent Rhhumi Dity Control Precision: 0.1 percent Rhmeasuring Accuration: -2 percent Rhload Power: 1 10 - 220VMAXOutput: 10AOutput type: direct outputInstructions for use: Set the initial humidity: press the UP button to display the initial humidity, press and hold for about 3 seconds to start the humidity flashing, then press UP or Down to adjust the humidity setting and stop humidity: press the down button to display the stop humidity, press and hold for about 3 seconds Stop the humidity flashing, then press up or down to adjust the settings Restore to factory settings: press the up and down buttons at the same time, it will show 888 and then it will automatically detect the humidity