About this product
- Warranty Type:Manufacturer Warranty
Product description
Measurable voltage: AC100~ 500V
Insert the pen metal into the socket hole and touch the top cap with your hand to identify the zero wire
Insert into the socket hole, touch the top cap with your hand, and the indicator light is firewire
Plug it into the socket hole and touch the top cap with your hand. If the indicator light is off, it is the zero line