<p>100% new with high quality and good price.</p> <p>For checking TDS\/salt (NaCl) levels freshwater aquariums, ponds and water purification systems.</p> <p>3-in-1 smart pen combines TDS, EC, and a temperature meter for improved accuracy.</p> <p>With an Automatic Temperature Compensation and the measuring range of 0-9999 ppm +\/- 2%.</p> <p>4 Display modes: SHIFT button: TDS - ppm \u0026 Celsius, EC - \u00B5s\/cm \u0026 Celsius, TDS - ppm \u0026 Fahrenheit, EC - \u00B5s\/cm \u0026 Fahrenheit.</p> <p>Lock function, easy to read and record, HOLD button then remove from test solution.</p> <p>The instrument automatically shut down after 5 min of inactivity.</p> <p>Conductivity: 0 - 9999\u00B5s\/cm</p> <p>TDS: 0 - 9999ppm</p> <p>Degrees Celsius: 0.1 - 80.0 Celsius</p> <p>Fahrenheit: 32.0 - 176.0 Fahrenheit</p> <p>Resolution: TDS: 1ppm; EC: 1\u00B5s\/cm</p> <p>Battery: 1x3.0V (CR2032)</p> <p>Accuracy: \u00B1 2%</p> <p>Colour:White</p> <p>Material:plastic</p> <p>Size:152 x 30 x 14mm</p> <p>Package Contents:</p> <p>1 x TDS \u0026 EC Meter</p> <p>Only the above package content, other products are not included.</p> <p>Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +\/- 1-3cm.</p>