1. Wide range of applications: the circuit tester can be used to test conductivity, test voltage polarity, check lights, check motors, trace and locate short circuits, test for poor ground contact, etc
2. Long test line: 4m/4.5m two specifications, allows you to easily test any electrical system
3. Short-circuit protection: the unit has a short-circuit protection function, which can instantly detect poor ground contact
4. Simple operation: after simply connecting the unit to the vehicle's battery, the automotive technician can conduct positive and negative battery currents to the tip by cranking the power switch forward or backward
5. Dual-lamp design for easy use at night
6. LCD screen with high definition display, data at a glance
7. Integrated 6-24V DC test kit: Do not use under AC voltage
8. External power supply: 12V or 24V DC power supply through the vehicle battery
9. Machine size: about 260 x 40 x 28mm

Operating Instructions:
1. Unfold the cables of the unit
2. Place the red clip on the positive terminal of the vehicle battery
3. Attach the black clip to the negative terminal of the vehicle battery