Feature:1. With a pen like appearance, it is simple and portable, and can be easily held for measurement in various situations.2. Simple operation, you only need to put the meter into the solution, and it can respond quickly and stably to the reading.3. With a calibration function, it can perform data calibration after the test to ensure high accuracy.4. Multifunctional, it is mainly used to test TDS (ppm /), EC (uS / cm, mS / cm), SALT (%), S.G (sea water gravity) and TEMP (/).5. Wide range of applications, it is suitable for agriculture, animal husbandry, aquarium and food brewing.Specification:Item Type: Water Quality DetectorModel: C-100Material: ABSBattery: 3x1.5V LR44 Battery (Battery Not Included)Application: It is suitable for agriculture, animal husbandry, aquatic products, and food brewing.EC Range: 0-10000uS/Cm, 10.01-19.99mS, 20.1-400mS/CmEC Resolution: 1uS/Cm; 0.1mS/CmEC Accuracy: 2%F.STDS Range: 0-1000ppm, 1001ppm-10000ppm, 10.1-200.0ppt (Automatically Out of Range)TDS Resolution: 1ppm; 0.1pptTDS Accuracy: 2%F.SSalinity Range: 0.01-25.00%, 0-10000ppm, 10.1-200pptSalinity Resolution: 0.01%Salinity Accuracy: 0.01-5.00% (0.1%) 5.10-25.00% (1%)SG: 1.000-1.222EC Calibration: Optional Three-Point Calibration (1413uS, 12.88mS, 111.8mS)Temperature Compensation: ATCOperating Environment: 0 To 80.0C (32.0-176F); <90%TDS Coefficient: 0.5Temperature Range: 0.1-80.0, 32.0-176Temperature Accuracy: 0.5Temperature Resolution: 0.1/.Package List:1 x Water Quality Detector (Battery Not Included)1 x Carrying Bag1 x Manual