1. Large LCD screen: large digital display, the detection number is clearly read. 2. PH detecting probe: adopts high precision waterproof probe, can accurately record the measurement position, sensitive response. 3. 9V battery compartment: light weight, low power consumption, energy saving, long battery life. 4. A variety of scenarios can be used: suitable for water quality testing, such as drinking water testing, swimming pools, laboratories, aquaculture, sewage treatment, etc.. 5. Maintenance: Shake off the water after the test is completed, keep the motor clean, if not used for a long time, please take out the battery and cover the electrode protection cover for storage! Product model:PH602 Measuring range:0.00-14.00PH Resolution:0.01PH precision:±0.05PH Operating temp:0℃-50℃ Automatic temp compensation:0℃-50℃ battery:1 9V battery (Battery not included) Calibration mode:Manual two-point calibration Due to different batches, there may be differences in product appearance, color, and printed text, which not affect the use. Colour:As Shown Material:ABS Package Contents: 1 * Water Quality Tester kit Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.