Attach the wrist strap so that it firmly contacts the wrist
Connect the grounding wire to the wrist strap
Insert a 9V battery into the battery compartment at the rear of the unit
Insert the banana clip for the grounding wire into the grounding wire jack at the top of the unit
Press the test pad on the front of the unit An LED lamp and audible signal will be heard
If the green"Good"lamp lights up, the grounding system is safe
If the red "Low" lamp lights up, check the resistance of the wrist strap grounding wire as it may be lower than 800K ohm, which would have an influence on the human body
If the red "High" lamp lights up, check the wrist strap to make sure it firmly contacts the wrist. Also check the resistance of the wrist strap grounding wire to make sure the grounding wire is not broken
