Function of humidification and dehumidification / Hysteresis functionHumidity correction / Delay protectionFunction of Upper and Lower limit / with wide humidity measuring range and controlling rangeComes with a humidity controller sensor probe with cable and a temperature sensor probe with cableHumidity Measuring Range: 1% ~ 99% RH / Humidity controlling range: 1% ~ 99% RH Humidity Measuring Error: 3%Resolution: 1% RH;Sensor Type: HM-40Power Suppler: AC 220VCurrent: MAX 200MAData retention: YESRelay contact current: AC 5A/220VTemperature compensation: YESData Retention: YESWorking temperature: 0C - 50 CStorage temperature: -10C - 60 CColour:Photo ColorMaterial: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.