Feature: 1. Use to measure the pH & EC & TEMP TDS of solution, omni‑directional measurement of water quality to make sure the health of water quality. 2. With automatic temperature compensation mode, so as to solve the inaccurate problem caused by changing the liquid temperature. 3. Widely used in aquaculture, household water quality, swimming pools, agriculture, etc. 4. Large and clear LCD, and the backlight function can help you get accurate and fast readings. 5. High sensitivity and accuracy, accurate determination of hydrogen ‑ rich content in water to improve human sub‑health. Specification: Condition: 100% Brand New Item Type: Water Quality Tester Material: ABS Color: As shown in the picture Weight: Approx.155g/5.5oz Application: Widely used in aquaculture, household water quality, swimming pools, agriculture, etc. Battery: 3 x LR004 button battery 160MAH(Not included) . Package List: 1 x Water Quality Tester(Battery Not Included)1 x Screwdriver1 x Instruction Manual Note: 1. Please allow 1‑2cm error due to manual measurement. Thanks for your understanding.2. Monitors are not calibrated same, item color displayed in photos may be showing slightly different from the real object. Please take the real one as standard.