Line/Electricity Detector and Lighting 3 in 1 Auto Repair Tool(Red) Instruction Tips

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Matched product:

Instruction marks:
Wrong power saving mode:Turn off the backlight for 30 seconds
Right power saving mode: Turn off the backlight after 20 minutes

Reason:
At first, the backlight is 30 seconds, then a lot of customers feedback that 30 seconds is too short, still have not detected the fault, then the backlight shut, always need to press the backlight, so the factory prolonged to 20 minutes