1、Multi 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. 2、Wide Range Of Uses: Apply in water sources, aquarium, hydroponics, laboratory, environmental water and other water systems. 3、Easy Calibration: PH value and TDS can be easily calibrated with just a mini screwdriver, offer safer and preciser measurement. 4、Long Term Online Monitoring: After the battery is charged for 3 hours, monitor can work continuously for more than 8 hours without electricity 5、Transparent 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 Tester Material: ABS Color: As shown in the picture Product Size: Approx. 152x80x26mm / 5.98x3.15x1.02in Weight: Approx. 652g / 23oz Range: ph:0.00-14.00 TEMP:-50 ℃-70 ℃ RH: 10%RH-99%RH EC:0.00-19.99EC CF:0.0-199.9CF TDS: 10-19990ppm Resolution: ph:0.1ph TEMP:0.1 ℃ RH: 1%RH EC: 0.01EC CF:0.1CF TDS: 10ppm Accuracy: ph±0.1ph TEMP:±1℃ RH: 5%RH EC, CF, TDS: ± 2% F.S Working Temperature: 0 ℃-50 ℃ Compensation Temperature: 0 ℃-50 ℃ DC Current: DC6V Battery: 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. 1 x Water Quality Tester 1 x Adapter 1 x Electrode 1 x Connection Line 1 x Manual 4 x Accessories