HugeAuto H844905 8-in-1 electric circuit tester combines essential testing tools in one handheld device for versatile electrical work. - Voltage test: a voltage tester probe pen detects voltage from 6V to 380V with reliable accuracy, helping confirm live circuits before servicing. - Continuity check: continuity detector pen quickly verifies circuit continuity and pinpoints breaks or open connections. - Meter tester: provides reliable measurements for common electrical tasks, supporting precise diagnostics. - Visibility and safety: bright yellow color enhances visibility in busy work environments and reduces the chance of misplacement. - Design and use: compact handheld tool designed for general electrical testing tasks, easy to carry and operate. Applications: - Inspect outlets, switches, and power lines in homes, offices, or small businesses. - Verify wiring and connections during installation, repair, or modification projects. - On-site checks of electrical panels and equipment to confirm voltage presence and continuity before servicing.