Power and portability: The detector is powered by two 9V batteries (not included). It is a compact, handheld tool designed for quick onsite fault detection. Quick open circuit and short circuit detection: Quickly detects open circuits and emits warning signals to help you locate shorts, opens, and disconnections in the wiring. Short circuit checking with a flexible probe: Tests intermittent circuit problems by bending the wire or connector and listening for changes in the receiver's tone. The flexible probe design provides deep access to congested areas and hardtoreach wire positions, reducing blind spots. Multifunctional wire tracking without insulation damage: Identifies and traces wires or cables without damaging insulation. It functions as a versatile automotive cable wire tracker tester to check short circuits, locate open circuits, track wires, and identify wires. Quick and convenient continuity testing: Enables fast judgment of cable or wire continuity and helps diagnose breakpoints, making repairs more efficient and straightforward. Key features and capabilities: Portable, automotivefocused cable tester with a flexible probing tip for difficult locations; supports detection of shorts, opens, disconnections, wire identification, and continuity checks without harming insulation. Practical use scenarios: Automotive electrical diagnosis: locate open circuits, shorts, or disconnected wires in engine bays, dashboards, or tail light circuits. Wiring harness tracing: identify and track individual wires in congested harnesses or tight spaces without removing insulation. and installation efficiency: quickly verify continuity and pinpoint breakpoints during repairs or wiring installations. Compatibility and performance notes: Designed for automotive cable and wire testing, capable of identifying and tracking wires and detecting short and open circuits with a nondestructive approach. Battery requirement: two 9V batteries (not included).