TM510 4000-counts multimeter - Smart Auto Mode for effortless measurements: automatically detects AC/DC voltage, resistance, and continuity; no manual mode or range selection; auto-recognition speeds tasks and improves accuracy. - Safe noncontact testing with protective cover: noncontact voltage sensor with visual and audible alerts; silicone protective cover shields against drops and electric shocks. - Noncontact AC voltage measurement: measure voltage without touching conductors for safe troubleshooting. - Convenience features for everyday use: data hold, auto shutdown after 15 minutes with disable option, low battery indicator, backlit display, and built-in flashlight; designed for amateurs, car owners, and homeowners. - Practical uses: check home outlets and switches, diagnose car electrical issues under the hood, and troubleshoot appliances for faulty fuses or wiring.