Features: 1. Electrode is used, and the contact area with water is large, and the measurement result is reliable and accurate. 2. Electrode of the water quality tester is designed to be detachable, which is faster and more convenient. 3. Drinking hydrogen rich water for a long time can effectively remove the free radicals in the body, which can help sleep and improve the skin. 4. LCD high definition display with backlight function can easily cope with the night environment. 5. 0~50℃ automatic temperature compensation automatically eliminates measurement errors according to changes in ambient temperature. Specification: Item Type: Dissolve Hydrogen Meter Material: ABS Size: Approx. 20.7 x 3.6 x 3.2cm / 8.2 x 1.4 x 1.3in Weight: Approx. 156g / 5.5oz Range: ppb: 0-1999ppb / ppm: 0-1.99ppm Resolution: ppb: 1ppb / ppm: 0.01ppm Accuracy: ppb: ±10ppb / ppm: ±0.02ppm Automatic Temperature Compensation: 0℃~50℃ Battery Information: 2 x AAA Battery 1.5V(Battery Not Included) Working Temperature: 0℃~50℃ Package List: 1 x Dissolve Hydrogen Meter 1 x User Manual Features Instant Moisture Measurement: Get quick and accurate readings of moisture levels in soil, plants, and grains, helping you make informed decisions for optimal care and storage. Portable and Convenient: The compact design allows for easy transportation and hassle-free use, making it ideal for both indoor and outdoor gardening and farming applications. Clear LCD Display: The 4-digit LCD with backlight ensures visibility in various lighting conditions, enabling you to read the measurements with ease, even in the dark. Efficient Moisture Monitoring: Save time and money by effectively monitoring the dryness of materials, preventing moisture-related deterioration, rot, and potential damage during storage. User-friendly Operation: Simply insert the sensor into the material Package, and the moisture meter will provide instant readings. It also Features automatic temperature compensation and can be manually turned off or automatically shut down after 5 minutes of inactivity.