1. Using a hard metal probe to measure leaf H gas can quickly and accurately detect P value and chlorine gas, showing professional2. It is suitable for routine monitoring of PH value and chlorine level of different water sources in types of swimming pools3. 1 AA batteries are easy to handle, no need for several batteries to supply power, environmentally friendly and durable4. One machine for water quality testing can be done and portable5. The test results of PH value and chlorine value are displayed on the screen, which is easy to read and clear at a glance, without doubtsProduct Description: Type: Smart PH MeterDisplay mode: digital displayProbe Type: ProbeMeasuring range: 190mmX20mmAccuracy: mmTemperature compensation range: 10 ()Power supply voltage: 5 (V)Working temperature: 0-55 ()Name: Water quality tester Chlorine water quality testerHandle probe: 150mm longProbe (at): 48 mm longCable: 34OMM and 245MMPower supply: 1 AA alkaline battery (1.5V)(without)size: 17.5 x 12.5cmMaterial: ABScolour: white greyPackage Contents: 1 x Water quality detectorOnly 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.