1、ADVANCED TECHNOLOGY: It utilizes advanced technology to quickly measure soil fertility, enabling growers to apply fertilizers more effectively and optimize their planting efforts. 2、HIGH ACCURACY DESIGN: With an accuracy focused design, this tester ensures accurate measurements, significantly enhancing the growth efficiency of crops in greenhouses. 3、VERSATILE PROBE: The high accuracy probe is suitable for various soil types, allowing for rapid and accurate testing, making it a versatile tool for any agricultural setting. 4、LARGE BACKLIT DISPLAY: Featuring a large backlit screen, the soil fertility tester provides clear digital readings, ensuring visibility even in low light conditions for nighttime use. 5、IDEAL FOR GREENHOUSE GROWING: This fertility tester can accurately quickly analyze key nutrient levels in soil fertilizers, which is really suitable for greenhouse growing. Item Type: Soil Fertility Tester Material: ABS Weight: Approx. 281g / 9.9oz Product Size: Approx. 305x40x40mm / 12.01x1.57x1.57in Power: 3xLR44 Coin Cell Battery (Excluded) Temperature Range: -30.0℃-80.0℃ Temperature Resolution: 0.1℃; 0.1℉ Temperature Compensation: Automatic Compensation Backlight: Supports Backlight Shutdown: Automatically Shuts Down After Approximately 10 Minutes Operating Environment: 0℃-80.0℃; Relative Humidity: Up To 90% 1 x Soil Fertility Tester 1 x Instruction Manual