Compact, reliable voltage tester for accurate, safe electrical work Key benefits Fast, accurate readings: Real-time voltage detection from 12V to 300V displayed on a high-precision LCD, so you can quickly confirm circuit status and make correct decisions without guesswork. Safer contactless checks: NCV (non-contact voltage) sensor technology and contactless AC detection let you detect live conductors without touching exposed wiring, reducing shock risk. Clear alarms and feedback: Double audio-visual alerts plus a variable-frequency buzzer give unmistakable warnings for different voltage conditions so you notice live circuits even in noisy environments. Reliable fault identification: Intelligent auto-voltage recognition and neutral/live wire identification help you find wiring faults and verify polarity quickly, saving troubleshooting time. Built for real work: Insulation-safe technology and live-circuit prevention features provide extra protection during testing, making the tool suitable for professionals and serious DIYers. Features and what they mean for you Voltage range: 12V–300V real-time detection — covers low-voltage automotive/12V systems and typical residential/commercial mains up to 300V for versatile use. Display: High-precision LCD provides clear numeric feedback so readings are easy to read and record. Non-contact NCV sensor: Detects AC voltage without physical contact, useful for quickly scanning wires, outlets, and cables. Dual alerts: Visual (LCD and LED) plus audio (variable-frequency buzzer) warnings improve situational awareness and reduce the chance of missed live circuits. Safety functions: Insulation-safe design and live-circuit prevention reduce exposure risk during testing; ideal when working on energized panels or exposed wiring. Compatibility: Works with standard electrical panels, outlets, and typical wiring in residential and commercial settings; integrates with common multifunction tool workflows during installation and maintenance. Practical use scenarios Electrical troubleshooting: Quickly identify live and neutral wires and measure voltage on a home circuit when diagnosing outlets, switches, or lighting problems. Preventive maintenance: Scan distribution panels and junction boxes without contact to find energized circuits before performing maintenance or upgrades. Automotive and low-voltage checks: Verify 12V vehicle circuits, auxiliary batteries, and low-voltage control circuits before service or aftermarket installations. Who it’s for Electricians, maintenance technicians, building managers, and experienced DIYers who need a compact, dependable tester that speeds diagnostics while improving safety and clarity on the job. What you get A portable, precision voltage tester with NCV contactless detection, high-precision LCD, double audio-visual alerts, variable-frequency buzzer feedback, intelligent auto-voltage recognition, insulation-safe protections, and compatibility across common electrical panels and circuits (12V–300V).