Product: Wire continuity tester with loud buzzer, indicator light, and replaceable 9V battery Key benefits Hear results clearly: A powerful buzzer reaching approximately 100 dB ensures you will hear continuity signals even in noisy environments or when working at a distance. See results instantly: The built-in indicator light gives immediate visual confirmation of wire conductivity, making it faster to identify good or broken connections. Work without interruptions: The device uses a standard, replaceable 9V battery housed in the back compartment. The battery is easy to replace by removing the back cover, so you can resume testing quickly. What it does Tests wire conductivity/continuity and provides both audible (≈100 dB buzzer) and visual (indicator light) feedback to confirm connections. Compatibility and use Designed for common electrical and electronic continuity checks; works with standard wiring and connectors encountered in household, automotive, and electronics tasks. Portable and straightforward to operate; suitable for on-site troubleshooting and bench work. Performance and care Audible feedback: approximately 100 decibels for reliable detection in noisy settings. Visual feedback: indicator light provides clear, immediate confirmation. Power: replaceable 9V battery accessed through the back cover for easy maintenance and continued use. Practical applications Household wiring: verify continuity of switches, outlets, and repaired cable runs before re-energizing circuits (power down circuits as required for safety). Automotive electrical work: check continuity of wiring harnesses, grounds, and connectors while diagnosing faults. Electronics and appliance repair: confirm traces, jumper wires, and connector integrity on circuit boards and assemblies. Notes The tester provides continuity/conductivity feedback (audible and visual). Follow standard safety practices and de-energize circuits when required before testing.