Features: ACCURACY: The meter digital water tester utilizes sensitive glass bulb electrode sensors to provide quick and clear readings of accurate values in the 0-14.0 measurement. With a resolution of 0.01. EASY OPERATION: tester automatically calibrates at three point. You just remove the protector and dip the meter electrode into the solution. Pressing "ON/OFF" to turn on the electronic meter, stir gently, and wait a few seconds until the reading stabilizes. AUTOMATIC CALIBRATION: The digital meter features an automatic calibration function that adjusts based on water temperature and quality. By simply waiting a few seconds during testing, you can obtain readings. EXTENSIVELY TESTED: Designed to be portable and convenient, the meter can easily fit in your pocket or bag, allowing you to take it anywhere. Water testing kits is a choice for families and laboratory testing of values. Suitable for various applications, such as testing balance of drinking water, pools, aquariums, spas, and hydroponics. COMPLETE ACCESSORIES: The package includes 1x meter, 1x user manual, 2x 1.5V LR44 button cells (built-in), and 2x Buffer Powders. The detailed manual guides you on obtaining the most accurate and stable readings, ensuring a comprehensive experience. Specifications: Material: Plastic Measuring: 0.00~14.00 Resolution: 0.01 Operating Voltage: 2x1.5V Battery Working Environment: 0~60 CRH