• 4-in-1 Water Quality Test: With  4-in-1 pH tester, which can measure PH, ORP, H2, and Temp value with high precision at the same time. All-round measurement of water quality to ensure healthy water quality.
• ±0.05 pH Accuracy and 3-Point Calibration: It has a high-sensitivity glass probe, the full measurement range of the RCYAGO pH meter is 0-14ph, and the pH resolution is 0.01. And the pH meter uses the three-point calibration method to calibrate the electrode to the solution of pH 4.00, pH 6.86, and pH 9.18 to ensure the accuracy of measurement.
• PH Meter with Automatic Temperature Compensation: Temperature will affect the reading level, and automatic temperature compensation can ensure that you get the best reading. compared with other pH meters for water, there is only a range of 0°C-50°C. our digital pH meter has a better range of 0°C-60°C (32°F-140°F). therefore, it can solve the possible errors caused by the perfect change of liquid temperature, so as to make the pH reading more accurate.
• Automatic Power-Off Function & Backlit Display: The automatic power-off function turns off the power after 5 minutes without any operation to save power. The pH meter features a green backlit LCD to help you obtain the measurement results clearly in any situation.
• PH Tester with Wide Application: Ideal for household and laboratory pH testing applications, including drinking water, swimming pool, pond, aquariums, hydroponics, laboratory, etc.

Dissolved Hydrogen Range: 0~2400ppb/0~2.40ppm
ORP Range: -1200 ~ + 1200 mV
pH Range: 0.01 ~ 14.00 pH
Dissolved Hydrogen Resolution: 2ppb
Dissolved Hydrogen Accuracy: +-10ppb

Temperature ATC range: 0~50°C(32~122°F)
Temperature resolution: 0.1°C
Accuracy: +-0.2°C
Auto off: 10 minutes no operation.
Automatic backlight ON/OFF.
Power: 1.5V * 4pcs (LR44/AG13 battery)Included