SincereetaliFeatures: 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. Detachable probe design, avoid accidental damage to the probe, increase the replacement cost, and facilitate automatic replacement of the probe. If there is any problem, 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: 0.01-14.00?ph Resolution: 0.01 ph Accuracy: 0.05 ph ORP Test Range: ?999?mv Resolution: 1mV Accuracy: 2mV H2 Test Range: 0-2400?ppd?; 0.001-2.400 Resolution: 2?ppb?; 2 ppm Accuracy: 10 ppb; 10 ppm Temperature test range?: 0.1-60.0? 32.0-140? Temperature accuracy?: ?0.5? Temperature resolution: 1 / Automatic shutdown: 5?minutes Display size: 33 * 24mm Size: 183*37mm Package size: 19*4.3*4.3cm Package weight: 175?g 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