This is an easy-to-use instrument for testing salinity in soil, solution media, etc. It has alloy probe and is accurate and fast, can be widely used in greenhouses, farms, gardens, orchards, etc. Features: Easy, precise, fast and stable to use. Put the electrode into the soil or hydroponic nutrient that needs to be tested. High or low EC range switchable: Slide the "ms/s" switch to change between 0~10.00ms/cm and 0~1999s/ cm. Digital display with backlight, greatly improves the reading experience, powered by 4 LR44 batteries (not included). Easily measure soil salinity in greenhouse soil or solution media directly on site with this portable EC meter. Compact and lightweight, easy storage and portability. Please clean the electrode with distilled water and dry the electrode with filter paper. Note: Please read the user manual carefully before use. br/> Features: Main color: White Main material: ABS + alloy Vary: LOW?: 0~1999?s/cm HI?: 0~10.00ms/cm Resolution: LOW?: 1?s/cm HI?: 0.01?ms/cm Accuracy: 2%FS Power supply: 4 * LR44 (not included) Temperature compensation: 0-50 Item Size: 215*50*28mm/8.46*1.97*1.10in Item weight (without battery): 62g/2.19oz Package Size: 23 * 9.5 * 6 cm / 9.06 * 3.74 * 2.36 inch Package Weight: 145?g/5.10?oz Package list: 1 * soil EC meter 1 * small screwdriver 1 * User Manual (English)