Function of humidification and dehumidification or Hysteresis function Humidity correction or Delay protection Function of and Lower limit or with wide humidity measuring range and controlling range Comes with a humidity controller sensor probe with cable and a temperature sensor probe with cable Humidity Measuring Range: 1 percent - 99 percent RH or Humidity controlling range: 1 percent - 99 percent RH Humidity Measuring Error: 3 percent Resolution: 1 percent RH Sensor Type: HM-40 Power Suppler: AC 220V Current: MAX 200MA Data retention: YES Relay contact current: AC 5A or 220V Temperature compensation: YES Data Retention: YES Working temperature: 0C - 50 C Storage temperature: -10C - 60 C Colour:Photo Color Material:ABS Size:about 85 x 75 x 34.5mm Package Contents: 1 x Digital Humidity Controller kit Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is 1-3cm. Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.