Professional Design, wide range of application. Designed for detecting low - voltage circuit failure of transportation machinery. It can be used in the maintenance of automobile, motorcycle, road roller and other transport machinery.

Usage: Ground the clamp, and then use the probe to test the circuit, the light indicates power, working normally. If there is no response, the measuring point is faulty and needs to be repaired.

Note: It is forbidden to use the test pen beyond the voltage range of the circuit tester. The long probe of the test pen is very sharp. Please be careful to touch it by children.

Package includes：
1 * Circuit Test Pen
1 * Spring Wire And Large Alligator Clip
2 * Neon Lamp Tube