Feature: 1. Multi‑functional water quality detector, can be used to measure the pH, EC and temperature of solution. 2. Automatic temperature compensation, can replace the electrode probe, and calibrate pH and EC with a miniature screwdriver. 3. Equipped with LCD display, supports backlight function, and can visually display measurement results. 4. Suitable for water sources, aquariums, hydroponics, laboratories, hot springs, swimming pools and other water systems. 5. The temperature measurement range is ‑50℃‑70℃ (‑58℉‑158℉), which can withstand harsh conditions. Specification: Item Type: PH Tester Material: Plastic Measuring Range: PH: 0.00-14.00pH EC: 0-19990us/Cm Temperature: -50℃-70℃(-58℉-158℉) Resolution: PH: 0.01pH EC: 10us/cm Temperature: 0.1℃ (0.2℉) Accuracy: PH: ±0.1pH EC: ±2%F.S Temperature: ±1℃ (±2℉) Battery Information: 4 x 1.5V (AG-13) (Battery Not Included) Temperature Compensation: 0℃-50℃ Weight: Approx. 159g / 5.6oz How to Use: Install the battery (not included), open the cover and put the measuring head into the liquid to be measured, the value can be displayed in a moment. Package List: 1 x Host (Battery Not Included)1 x Manual