Precise voltage readings (12 V to 300 V): Real-time detection across a wide range lets you quickly verify low-voltage systems and standard AC circuits. Clear, high-precision LCD shows measured values so you can diagnose problems faster and with confidence. Fast live/neutral identification: Built-in detection and intelligent auto-voltage recognition identify live and neutral conductors without guesswork, reducing troubleshooting time and mistakes. Contactless NCV safety: Non-contact voltage (NCV) sensor detects live AC without touching bare conductors. Double audio-visual alerts (screen indicators plus sound) give immediate warning for live circuits and improve safety during inspections. Reliable feedback and protection: Variable-frequency buzzer provides intuitive audio feedback related to voltage presence. Insulation-safe technology and live-circuit prevention features reduce the risk of accidental contact and support safer testing routines. Broad compatibility and multifunction use: Designed to work across a wide range of electrical panels, breaker boxes, household wiring and low-voltage systems. Integrates smoothly with multifunctional tool workflows for electricians, technicians, and maintenance personnel. Key benefits — why you need it Improve safety on every job: Contactless detection, dual alerts and insulation-safe design minimize exposure to live parts. Save time diagnosing faults: Real-time LCD readings and auto-recognition remove guesswork when identifying live/neutral and confirming voltages. Versatile tool for many tasks: One device covers 12 V automotive circuits up through 300 V building wiring, reducing the need to carry multiple testers. Typical applications Home electrical troubleshooting: Verify wall outlets, switches and circuits, and identify live or neutral conductors quickly and safely. Automotive and low-voltage systems: Check 12 V circuits, accessories and wiring without switching to a different tester. Panel and maintenance work: Non-contact scanning and clear voltage readouts make routine inspection of breaker panels and industrial wiring faster and safer. Core features at a glance Voltage range: 12 V to 300 V (real-time detection) Display: High-precision LCD for clear readings Detection: Contactless AC (NCV) sensor Alerts: Double audio-visual alerts and variable-frequency buzzer Safety: Insulation-safe technology and live circuit prevention Functionality: Intelligent auto-voltage recognition and broad electrical panel compatibility This device is built for electricians, technicians and anyone who needs accurate, safer voltage detection and fast live/neutral identification across multiple environments.