SmartSensor PH818 PH Water Quality Tester Pen

1. Test the pH level and temperature of solution/water with data hold function.2. Pocket size, lightweight and portable with switchable backlight & large LCD display for clear reading.3. Replaceable pH sensor probe - The electrode probe can be replaced with insert type design for convenient and fast replacement.4. ATC function (automatic temperature compensation), automatic calibration and IP65 fully waterproof design.5. Apply in water sources, soil-free growing, aquariums, hydroponics, laboratory, spas, swimming pools and other water systems.6. Power: 2 x AAABattery (Not Included)