Features Wide humidity measuring range and control range from 1%RH to 99%RH. 3-bit LED digital tube displays the humidity clearly. Built-in humidity correction function. Robust shell design, waterproof and dustproof. Accurate humidity control, stable performance. Features: 1.Wide humidity measuring range and control range from 1%RH to 99%RH. 2.3-bit LED digital tube displays the humidity clearly. 3.Built-in humidity calibration function. 4.Robust shell design, waterproof and dustproof. 5.Accurate humidity control, stable performance. Specification: Model: SVWL-8040 Humidity measuring range: 1%-99%RH Humidity control range: 1%-99%RH Measuring error: 0.03 Power supply: AC 220V Current: Max. 200mA Data retention: Yes Relay contact current: AC 5A/220V Operating temperature: 0~50℃ Storage temperature: -10~60℃ Size: 84*80*38mm / 3.3*3.1*1.5in Package weight: Approx. 212g/7.5oz Package List: 1 * Humidity Controller 1 * Temperature Sensor Probe with Cable Package List