This is an easy-to-use instrument to test the salinity in the soil, solution media and so on. It's multifunctional and can test EC, TDS and temperature. And it has alloy probe and is accurate and fast, can be widely used in greenhouse, farm, garden, orchard, etc. 3 in 1 multifunction soil tester: EC/ TDS/ Temperature testing. EC ranges from 0 to 10000s/cm, TDS ranges from 0 to 10000ppm, temperature ranges from -50 to 70 (-58 to 158) Easy, accurate, fast and steady to use. Put the electrode into soil or hydroponics nutrient which is to be tested Digital screen with backlight greatly enhances the reading experience, 4 LR44 batteries powered (not included) Easily measure soil salinity in greenhouse soil or solution media right on the spot with this portable soil meter Compact and lightweight, easy storage and portability. Please clean the electrode with distilled water, and dry the electrode with filter paper Specifications: Main Material: ABS + Alloy Power Supply: 4 * LR44 (Not included) Temperature Compensation: 0-50 Item Size: 295 * 38 * 38mm / 11.61 * 1.50 * 1.50in Item Weight (without battery): 94g / 3.32oz Range: EC: 0~10000s/cm (0~10ms/cm) TDS: 0~10000ppm Temperature: -50~70 (-58~158) Resolution: EC: 10s/cm (0.01ms/cm) TDS: 10ppm Temperature: 0.1 (0.2) Accuracy: EC/ TDS: 2%F.S Temperature: 1 (2) Note: Please read the user manual carefully before use. Package included: 1 x Multifunction Soil Tester 1 x Small Screwdriver 1 x English User Manual