GABRIELLE 5 in 1 Electronic pH Meter, pH Meter with Backlit LCD Display, Water Quality Tester Water for Testing pH/TDS/EC/Temperature/Salinity, for Drinking Water/Aquarium/Swimming Pool 【5-in-1 Multifunction Device - This digital pH is equipped with 5 function groups, which can be used to test pH/TDS/EC/Salinity/Salinity/Salt/Sater temperature can be used. The measuring range is pH 0.00-14.00 (accuracy 0.01 PH). Protection class: IP67 【Backlit LCD Display Design【Green】 - This pH meter features a backlit LCD display. Bright green to display information in an intuitive layout. Even in poor visibility, you can still read the numbers. It is also convenient to use. Transport thanks to the portable pocket design. 5-minute auto-off design saves power and ensures battery life. 【High Precision pH Tester] - The glass probe of this pH tester is made of glass sensitive film with high temperature. Low resistance (25m2) and response speed of 0.1 seconds. TDS electrodes are made of flexible high