... earth fault indicator,blocking magnet,Led light,voltage sensor,temperature and humidity controller,etcTemperature and Humidity Controller WS- ... automatically switch the workingprocess of heating, dehumidification or temperature reduction according to the working environment state. The ... 0-99%RH degree of accuracy 5%RHTemperature range -9°C-+99°C degree of accuracy+/- 1°CHeating start point temperature ...