① This type of measuring pen can not only measure AC 220V, but also 110V, even as low as 12V, and can also measure DC current. Please refer to the manual for specific usage methods, which will not be described here.

1. Immediate measurement method

The general measuring pen can display information of 12V, 36V, 55V, 110V, and 220V. Under normal circumstances, the final displayed information value of the monitor is the measured voltage value.

2. Magnetic induction measurement method