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 Current: Maximum: 200mA Data retention: Yes 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