Features: 4 in 1 PH ORP H2 temperature water tester, the acid-base reaction of food directly affects human health. Easy to use, random switching H2/PH/ORP/TEMP. LCD display, portable and easy to carry. Probe detachable design, prevent accidental damage to the probe, increase the replacement cost, and facilitate self replacement of the probe. If there are any problems, please contact our store in time. Specifications: Item: Digital PH Meter Main Material: ABS Main Color: White Battery: 3*LR44 Battery(not Included) PH Test Range: 0.01-14.00ph Resolution: 0.01ph accuracy: 0.05ph ORP Test Range: 999mv Resolution: 1mV accuracy: 2mV H2 Test Range: 0-2400ppd; 0.001-2.400 Resolution: 2ppb; 2ppm Accuracy: 10ppb; 10ppm Temperature Test Range: 0.1-60.0 32.0-140Temperature Accuracy: 0.5Temperature Resolution: 1 /Automatic Shutdown: 5 Minutes Display Size: 33 * 24mm Size: 183*37mm Package Size: 19*4.3*4.3cm Package Weight: 175g Gift Box Packaging Note: * There could be some deviations due to manual measurement or slight color difference owing to photographing condition. Thank you for your understanding. Packing List: 1* Digital PH Meter