Feature 1Multi Parameter Test: This water quality monitor is a professional and necessary tool to test the level of your solution's PH / temperature / EC / CF / RH / TDS. 2Wide Range Of Uses: Apply in water sources, aquarium, hydroponics, laboratory, environmental water and other water systems. 3Easy Calibration: PH value and TDS can be easily calibrated with just a mini screwdriver, offer safer and preciser measurement. 4Long Term Online Monitoring: After the battery is charged for 3 hours, monitor can work continuously for more than 8 hours without electricity 5Transparent LCD with Backlight: LCD displays 3 results at the same time, which is easy to use and provides instant display of results.Item Type: Water Quality TesterMaterial: ABSColor: As shown in the pictureProduct Size: Approx. 152x80x26mm / 5.98x3.15x1.02inWeight: Approx. 652g / 23ozRange:ph:0.00-14.00TEMP:-50 -70 RH: 10%RH-99%RHEC:0.00-19.99ECCF:0.0-199.9CFTDS: 10-19990ppmResolution:ph:0.1phTEMP:0.1 RH: 1%RHEC: 0.01ECCF:0.1CFTDS: 10ppmAccuracy:ph0.1phTEMP:1RH: 5%RHEC, CF, TDS: 2% F.SWorking Temperature: 0 -50 Compensation Temperature: 0 -50 DC Current: DC6VBattery: Ni-MH battery 110mAH (built-in)Application: Widely used in aquarium tanks, fish tanks, glass fish pond, mining, medical research, agriculture, laboratories, water environment, quality control and other fields. .wang-edit-text{ font-family:'Arial' !important; } .wang-edit-text table { border-top: 1px solid #000; border-left: 1px solid #000; } .wang-edit-text table td, .wang-edit-text table th { border-bottom: 1px solid #000; border-right: 1px solid #000; padding: 3px 5px; } .wang-edit-text table th { text-align: center; }Package List1 x Water Quality Tester1 x Adapter1 x Electrode1 x Connection Line1 x Manual4 x AccessoriesNote1. Please allow 1‑2in error due to manual measurement. Thanks for your understanding.2. Monitors are not calibrated same, item color displayed in photos may be showing slightly different from the real object. Please take the real one as standard.