[High Accuracy]With premium quality probe and ACT(Automatic Temperature Compensation) function, the water quality tester reads accurately at various temperatures. [3 in 1 Function]This TDS meter can test TDS,EC and temperature. Its measuring range of TDS is 0-9999 ppm with accuracy: +/- 2%, while the EC range 0-9999 us/cm and the temp range is 32.0-212F- 0-99.0 Celsius with accuracy +/-0.1 Celsius. [Auto Hold and Turn Off]The reading result will be auto-locked on LCD in seconds. To safe the power supply, the water tester will shut down automatically after 2 minutes stand by. [Upgrade LCD Backlit Display]Unlike traditional screen, the water tester designed with advance LCD backlit display, which is easier and clearer to be read. product includes 1 year . [Compact Design]Come with a leather case, this TDS meter is portable to be carry . You can test water anywhere to get the drinking water. Instructions: 1. Remove the protective case and press the on/off button. 2. Soak the TDS instrument in water. 3. The tester for stirring water is stable. 4. Use the instrument, towel. 5. Press on/off for 3 seconds to turn off. Measuring range: TDS: 0 - 9999 PPM (in points) Celsius: 0.1 - 00.0 Celsius Fahrenheit: 32.0 - 100 Celsius Accuracy: +/- 2% F.S Colour: Yellow Material: ABS Size: 16*1.5*3cm Package Contents: 1 * Water Quality Tester(with 1 black leather bag) note: 1. Do not sag, the entire TDS instrument is immersed in water or beyond the maximum immersion level. 2. Do not expose the water detector to high temperatures or direct sunlight. 3, without the ground, press or flop. Only the above package content, other products are not included. 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.