Features Wide Humidity Range: Measure and control humidity levels from 1% to 99% for precise management in various environments Clear Digital Display: 3-bit LED digital tube provides easy-to-read humidity levels, ensuring you stay informed at a glance Built-in Correction Function: Automatically adjusts for accurate readings, enhancing reliability and performance of the humidity control system Durable Design: Robust, waterproof, and dustproof shell protects the device, ensuring longevity in any setting Stable Performance: Offers accurate humidity control with consistent operation, making it ideal for home, industrial, or greenhouse use 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 correction function. 4、Robust shell design, waterproof and dustproof. 5、Accurate humidity control, stable performance. Specification: 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: Maximum: 200mA Data retention: Yes Relay 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 x Air Humidity Controller with Probe Package List