Press the sensitivity / phase / flashlight key and hold for more than 2 seconds. The flashlight is opened; The flashlight is closed by pressing the sensitivity / phase / flashlight key and holding for more than 2 seconds.
No signal and no operation will be automatically power off after 5 minutes.
AC Voltage Tester Pen GD116B:
Pls Clink Below Photo and Read more details about this AC Voltage Tester Pen GD116B :
