If it is an open circuit, the LED light will not light. Besides, sharp stainless steel probe for piercing wires effortlessly, also for hard to reach tight areas.
Autel PS100 Circuit Tester Electrical Diagnostic Tool With Power Scan
Autel PS100 Circuit Tester Electrical Power Probe Diagnostic Tool 12/24V
Autel PS100 Circuit Tester Probe Tool, 12V &24V Electrical Testers Diagnostic
12V/24V 2026 New Autel PS100 Circuit Tester Electrical Diagnostic Power Probe
2026 New Autel PS100 Circuit Tester Electrical Diagnostic Power Probe 12V/24V