What is a test leads in electronics
Test leads are not just a means of connecting your digital multimeter to the device under test, they are also an integral part of the entire measurement system.
The test lead is usually made of a cable with elastic material to maintain its flexibility, and the wire can usually conduct 15A or 20A.
A typical voltmeter probe consists of two single-wire test leads of different colors. One end of the test line has a safety banana plug that can match a multimeter, and the other end is a cylindrical tubular plastic part. The handle allows people to hold and guide the alignment, which is safe without affecting the measurement.