1Water quality tester is specially designed to monitor the PH value, salinity value and water temperature of the water in the fish tank or aquarium in real time for 24 hours. 2Water quality monitor can be easily hung on the fish tank through the attached bracket or fixed on the wall through the suspension hole. It is also equipped with suction cup to fix the electrodes on the wall of the fish tank. 3High sensitivity electrode probe smart chip is used for speed and accurate measurement, and 2 LCD screens with green backlight are used to clearly display the pH value, salinity value and temperature. 4It has a wide range of applications and is suitable for seawater, gardening and hydroponics applications, where pH and salinity levels need to be constantly monitored for optimal plant growth. 5Made of high quality ABS, the water quality monitor is durable, wear resistant and corrosion resistant. with high accuracy, high stability, and accurate test results. Item Type: Water Quality Tester Model: PH-2987 Material: ABS Uses: fish pond, sewage plant, laboratory, medical research, food processing, food testing hospital, swimming pool, disease control center, water plant laboratory, aquaculture Range: PH: 0.00~14.00pH, Salinity: 0~199.9ppt, Temperature: 0~50 Resolution: PH: 0.01pH, salinity: 0.1ppt, temperature: 0.1 Accuracy: PH: 0.1pH, salinity: 2%F.S ppt, temperature: 1 Working Temperature: 0~50 Automatic Storage Temperature: 0~50 Output Power: DC 6V 1 x Water Quality Tester1 x PH Electrode1 x Temperature Probe1 x Power Adapter1 x Screwdriver2 x Hook and Loop Fastener3 x Hanger1 x Suction Cup1 x ManualPH electrode with liquid ( with liquid).