Features Wide humidity measurement range and control range from 1%RH to 99%RH. Solid shell design, waterproof and dustproof. The 3-digit LED digital tube displays the humidity at a glance. Built-in humidity calibration function. Accurate humidity control and stable performance. Features: -Wide humidity measurement range and control range from 1%RH to 99%RH. -Solid shell design, waterproof and dustproof. -The 3-digit LED digital tube displays the humidity at a glance. -Built-in humidity calibration function. -Accurate humidity control and 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 L ist: 1 * Humidity Controller 1 * Temperature Sensor Probe with Cable Package List