<p><b>Super accurate, reliable and easy to use TDS, EC &Temp water tester reader, with backlit and auto-lock function, 3 years warranty and 90 days money back guarantee.</b><br> This advanced digital ppm meter pen with Advanced Microprocessor Technology, combines TDS Meter(Total Dissolved Solids), EC Meter(Electrical Conductivity) and Temperature meter all in one ergonomically designed pen. <br> <br> Widely be used for all Water Quality Testing, Water Purification Applications, Aquaculture, Hydroponic, Pool & Spa, Colloidal Silver, Water Treatment and more.<br> It’s a must have handy tool for every household, testing for tap water, filtered water, distilled water, bottled water, well water, refrigerated water, etc. <br> <br> <b>Features:</b><br> * Automatic Temperature Compensation(ATC)<br> * Equipped with backlit LCD for easy reading. <br> If TDS≤40, the backlit color is green, <br> If TDS>40, the backlit color is red. <br> * Auto-Lock Function: From test beginning, the reading can be stabilized in seconds, and locked automatically for easy read and record.<br> * Hold Function: Before reading locked automatically, the reading can be locked manually if press “HOLD”.<br> * Factory Calibrated: No need calibration by user. <br> * Auto-Off in 2 Minutes to conserve battery.<br> * A colorful TDS chart on the back to explains ppm readings.<br> * Includes a protective carrying case with belt clip, easy to carry.<br> <br> <b>Specifications:</b><br> * Measuring Range: <br> TDS: 0 - 9990 ppm (parts per million) <br> Conductivity: 0 - 9990 µs/cm <br> Degrees Celsius: 0.1 - 50.0°C<br> Fahrenheit: 32.0 - 122.0°F<br> * Accuracy: ± 2% F.S<br> * Net Weight:1.62oz(46g)<br> * Size:6.29 x 1.14 x 0.59 inches (160x29x15mm)</p><p><b>Package Including: </b><br> 1x TDS Meter <br> 1x HoneForest Instruction <br> 1x portable leather bag <br> 1x HoneForest color box</p>