A TDS meter (aka ppm pen, nutrient tester, tds stick) is an inexpensive and convenient digital tool to instantly check your overall water quality

1. High-precision sensor, self-developed intelligent photosensitive chip, to achieve high precision and wide range, 2. It can be connected to Bluetooth, you can record, analyze data, save, share social and other functions on the mobile cloud applet 3. Automatic temperature compensation to make coffee measurement more accurate at different temperatures 4. Quick test in 2 seconds, drop test can be done with a single key of power on, minus the complicated and various instruction buttons, all the results are displayed immediately and intuitively, allowing you to quickly know the test results 5, TYPE-C intelligent fast charging, no need to replace the battery, charging for 1 hour, the battery life is 30 days