Feature: Suitable for water sources, aquariums, hydroponics, spas, swimming pools and other water systems. 3 in 1 multifunctional water tester, test the pH, EC and temperature of any liquids. Large LCD display, easy to read the displayed value. Highly efficient and accurate due to its advanced microprocessor technology. Lightweight and portable design, convenient for indoor and outdoor use. Automatic temperature compensation (0°C~60°C). Speciation: Material: ABS Battery: 3pc 1.5V AG13 button battery(Not included) Temp compensation: Automatic temperature compensation(060Auto power off: 5 minutes Environment temperature: 06032140RH 100% Size: 183*37mm / 7.2*1.5inch (Approx.) Specification pH EC Temperature Range 0.0014.00PH 119999μs/cm 060 Resolution 0.01ph 1μs/cm / Accuracy +0.05ph +2% +0.5 Calibration 6.86 point: accuracy +0.01pH 6.86/4.00(6.86/9.18 points): accuracy +0.05pH 6.86/4.00/9.18 points: accuracy +0.02pH Calibrated by factory (1413 μs / cm) / Package list: 1 * Water Meter(Battery not included)