Feature:1. The 5 in 1 multifunctional water quality tester measures PH, TDS, EC, salinity and temperature.2. High performance, pen shape design, fast numerical stability and accurate calculation result.3. IP67 waterproof grade, can still be used when dropped into the fish tank, more convenient to use.4. The probe can be replaced, automatically calibrated, high precision and high reliability, easy to operate.5. Support for backlight, 5 minutes automatic power off function, light weight, small size, easy to carry.6. Suitable for aquaculture, drinking water, swimming pool, aquarium, food processing, laboratory, paper industry, etc.7. The seawater salinity can be measured. The seawater salinity is the ratio of total dissolved solids to the weight of sea salt in seawater. It is usually expressed in g/kg seawater and the measurement range is 10.1-200.0ppt.8. Light salt salinity can be measured. Light salt refers to light water with a salt content of less than 0.5g/L. The measurement range is 0.00-25.00% and the accuracy is 0.01-5.00%, 5.10-25.00%.Specification:Condition: 100% Brand NewItem Type: Water Quality TesterMaterial: PlasticEC Test Range: 0 to10000uS/cm 10.01-19.99ms 20.1-400mS/CMResolution: 1uS/cm; 0.1mS/CMAccuracy: 2% of the readingTDS Test Range: 0 to 1000ppm 1000ppm to 10000ppm 10.1 to 200.0pptResolution: 1ppm; 0.1pptAccuracy: 2% of the readingSalinity Test Range: 0.00 to 25.00%Resolution: 0.01%Accuracy: 0.01-5.00% (0.1%) 5.10-25.00% (1%)pH Test Range: 0.01-14.00pHResolution: 0.01pHAccuracy: 0.05pHTemperature Compensation: Automatic Temperature Compensation (ATC)Working Environment: 0 to 60.0 (32.0-140); RH 100%TDS Factor: 0.4 to 1.0Temperature Range: 0.1-60.0 32.0-140Temperature Accuracy: 0.5Temperature Resolution: 0.1/Automatic Power-off: 5 MinutesDisplay: Support BacklightWaterproof Grade: IP67Power Consumption: 2.9mA, power consumption for shutdown is 0Feature: Within 150ppt, the accuracy is relatively accurate, while above 160ppt, the deviation is relatively largeBattery: 3 x LR44 Button Battery (Not Included)Display Screen Size: Approx. 33 x 24 mm / 1.3 x 0.9 inProduct Size: Approx. 183 x 37 x 37 mm / 7.2 x 1.5 x 1.5 inWeight: Approx. 162g / 5.7ozPackage List:1 x Water Quality Tester (Battery Not Included)1 x User ManualNote:Be sure to clean the electrode after each use.The product will automatically turn off after about 5 minutes of bright light, and enter the power saving mode. Press any key and the light will turn on again.Please note that the new type and old type of this product will be sent randomly, and make sure you will not mind before ordering.