Answer
Dec 11, 2024 - 02:36 AM
To turn on the AstroAI AP639 Digital Tire Pressure Gauge, simply press the trigger button located on the handle of the gauge. The gauge will display "0.0" on the LCD screen to indicate that it is turned on and ready for use. Please refer to the "Operation Instructions" section of the user manual for more details on using the gauge.
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