800~1000V Lightning Counter Tester Quotation User Guide:
The power switch is located between the body and the head. Rotate it 90 degrees in any direction; hearing a "click" indicates the power is on, and the opposite indicates off. Before use, insert the grounding wire into the tail socket. After turning on the power, the green light will turn on. When the red light turns on (about 3-5 seconds), you can test the lightning counter through the head's telescopic conductive rod (which can be pulled out before powering on according to the counter's installation height). You can test repeatedly without turning off the power (the conductive rod should be removed from the test object each time charging).