Step 3: Wait a few seconds for the value to Stabilize. and then press the hold button.
Step 4: take the TDS meter out of the water, then you can read the value.
Step 5. Press the off button after use. But
If you forget to press the off button, this meter will automatically turn off after 5 minutes. This design greatly extends the life of the battery. step 6: Rinse the meter with pure water after use, and finally put on the cap.
If you forget to press the off button, this meter will automatically turn off after 5 minutes. This design greatly extends the life of the battery. step 6: Rinse the meter with pure water after use, and finally put on the cap.
*** press "temp" button to test temperature.














