1[2 IN 1 DESIGN] TDS temperature tester, supports the measurement of water temperature and TDS value, provides fast and accurate measurement. 2[BACKLIGHT BUTTON] Supports backlight display, which is easy to read, does not affect the use in the dark, and displays the measurement results intuitively and clearly. 3[SWITCH BUTTON] With ppt ppm conversion button, you can select the appropriate measurement unit according to the actual situation to meet the needs of use. 4[HIGH QUALITY MATERIAL] Using high quality ABS plastic material, it is safe and durable, corrosion resistant, abrasion resistant, and has a long service life. 5[NON SLIP DESIGN] It is designed with frosted cover and function keys, which is non slip and comfortable to hold, suitable for measuring drinking water, hydroponics, aquariums, swimming pools, laboratories, etc.1 x Detector (Battery Not Included)1 x Probe1 x Probe Needle1 x Modification Tool1 x Manual