1. Brand new and of excellent quality. 2. Specifications: - LED display: Red or blue light, shipped randomly. - Humidity range: 00% - 99%RH. - Humidity control accuracy: 0.1%RH. - Measurement accuracy: ±2%RH. - Load power: 110V - 220V. - Maximum output: 10A. - Output type: Direct output. 3. Instructions for use: - Set the starting humidity: Press the “UP” button to display the starting humidity. Long - press it for about 3 seconds. The starting humidity digits will flash. Then press the “UP” or “Down” button to adjust and set. - Set the stopping humidity: Press the “Down” button to display the stopping humidity. Long - press it for about 3 seconds. The stopping humidity digits will flash. Then press the “UP” or “Down” button to adjust and set. - Restore factory settings: Press the “UP” and “Down” buttons simultaneously. “888” will be displayed, and then the humidity will be automatically detected. 4. Package contents: - 1 digital humidity controller. - 1 humidity sensor.