LCD Digital Ph Meter 3 in 1 TDS Water Quality Tester EC Temperature Meter for Drinking Water AquariumFeature:Water Quality TesterLock Function; Easy to read and record, the instrument will lock the reading; 5 minutes automatic function shutdown, battery will not run out; Specification:Meter Ph Display Mode: LCD Digital, You can mention them: 0.01Resolution: 0.01Working Temperature: 0 - +60°cMeasuring Range: 0.00 - 14.00Color: Yellow Size: 155x31x1 8mm/6.10x1.22x0.71" Weight: 75g Water Quality Tester Measuring Range:0 - 9990us/cm0 - 9999ppmCelsius: 0.1 - +80.0°CFahrenheita: 32.0 - 176.0°FDaccuracy: ± 2%Color: BlueSize: 154x30x1 4mm/6.06x1.18x0.55"Weight: 65gNote:1. There may be slight deviations in size due to manual measurement, different measurement methods and tools.2. The picture may not reflect the actual color of the item due to different light, angle and shooting monitor.1 X Ph Meter/Water Quality Tester (Optional)