5
Description on indicator lamp:
"Wait light" and "PH" flicker, indicating that the sensor is being initialized. When the
"green light" keeps on and "TEST" flickers, you can start blowing test.
When the USB is connected to charge, the red light at "wait" is on, and the red light goes
out after the charging is full.
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When the test results exceed the alarm value, the red light here is on.
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When viewing the record, the green light is on here.
Basic Operation
It is recommended to avoid smoking and drinking for at least 10 minutes before the test
and gargle with clear water before the test to ensure the accuracy of the test results. The
alcohol residue can influence on the reliability of the test results.
Power Supply Description
Please read the instructions carefully
1. Open the back battery slot.
2. Mount one load circuit protection rechargeable lithium battery. (3.7V)
3. When "Low bat" flickers, the battery is dead. There is a need to replace battery or
charge with USB connection. When charging, the red light is on, and when fully charged,
the red light goes out.