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 Item Type: Water Tester Material: ABS Battery: 3 x LR44 batteries (Battery Not Included) H2 Detection Range: 0 to 2400ppb, 0 to 2.400ppm H2 Detection Resolution: 2ppb, 0.002ppm H2 Accuracy: ±10ppb, ±0.01ppm Temperature Detection Range: 0.1 to 60°C, 32 to 140°F Temperature Resolution: 0.1℃, 0.1℉ Temperature Detection Accuracy: ±0.5 Working Environment: 0 to 60°C (32 to 140°F), RH90% Waterproof Grade: IP67 Automatic Temperature Compensation: 0 to 60℃ Weight: Approx. 190g/6.7oz 1 x Water Tester (Battery Not Included) 1 x User Manual