Features 1、LCD screen display is used to facilitate reading in a dim environment. It takes about 4‑5S to stabilize the value. 2、The automatic temperature compensation temperature sensor can be directly contacted with the solution, and the reading is more accurate. 3、It adopts the test type design, small size, light weight, more convenient to carry, and can be used at any time. 4、The water quality detector has high accuracy, stable performance and very accurate test results. 5、Water quality tester has a wide range of applications and is widely used in the detection of fish tank, aquarium, swimming pool, drinking water, etc. Specification Item Type: Water Quality Test Pen Model: PH-03 Material: ABS Battery: 3 x 1.5V LR44 (Battery Not Included) Purpose: Water Quality Testing PH: 0.00-14.00PH Accuracy: 0.01PH Resolution: ±0.05PH TEMP: ATC: 0-60°C Package List 1 x Water Quality Test Pen (Battery Not Included) 1 x Manual 3 x PH Powder