1. Versatile applications: Functional voltage tester with tool-change capability and a double-bit screwdriver. Increases efficiency across repairs thanks to high adaptability. 2. Energy management: Intelligent sleep mode extends battery life while delivering reliable performance and meaningful energy savings for the user. 3. Precise detection: Digital HD display and advanced sensing provide accurate readings of voltage ranges for dependable measurements in various household electrical environments. 4. Status recognition: Clear screen indicators and white LED lighting ensure safe use and good visibility in low-light conditions, optimizing the efficiency of voltage testing. Use scenarios: - Inspect outlets, switches, and cords during routine home maintenance. - Troubleshoot appliances and fixtures such as lighting, power strips, and circuit connections. - Verify safety of wiring during renovations or DIY projects.