1、Detachable Design: The probe of the water tester has a detachable design, which prevents accidental damage to the probe and facilitates replacement 2、ATC Sign: ATC sign appears in the lower left corner of the display of the hydroponics testing meter, indicating that the instrument is in automatic temperature compensation mode 3、LCD Display: The digital water tester has a large and clear LCD display with backlight, easy for reading and accurate testing 4、ABS Material: The water quality test meter is made of ABS material, which is wear resistant and durable, and has a long service life 5、Scope of Application: The 2 in 1 water tester is widely used in drinking water testing, electrolyzed water machines, hydrogen rich water cups, etc 1 x Water Tester (Battery Not Included)1 x User Manual Item Type: Water TesterMaterial: ABSBattery: 3 x LR44 batteries (Battery Not Included)H2 Detection Range: 0 to 2400ppb, 0 to 2.400ppmH2 Detection Resolution: 2ppb, 0.002ppmH2 Accuracy: ±10ppb, ± 0.01ppmTemperature Detection Range: 0.1 to 60°C, 32 to 140°FTemperature Resolution: 0.1℃, 0.1℉Temperature Detection Accuracy: ± 0.5Working Environment: 0 to 60°C (32 to 140°F), RH90%Waterproof Grade: IP67Automatic Temperature Compensation: 0 to 60℃Weight: Approx. 190g/ 6.7oz