DUAL FUNCIONALITY: Combines a Circuit Breaker Finder and Plug Socket Tester with GFCI in one convenient product, perfect for Identifying Wiring Faults and Locating Fuses or Circuit Breakers. EASY WIRING FAULT DETECTION (SOCKET TEST): Easily detect Open Ground, Open Neutral, Open Live, and Reversed Riring issues with clear and easy-to-read LED indicators. RELIABLE FUSE LOCATOR (BREAKER FIND): Quickly and accurately Locate Circuit Breakers or Fuses with a sensitive and precise locator function , saving time and effort during electrical troubleshooting. USER-FRIENDLY DESIGN: Simple plug-and-play operation with no need for additional tools or complicated instructions, making it ideal for both DIY enthusiasts and professional electricians. COMPACT AND DURABLE: Lightweight and portable design with robust construction ensures durability and ease of use in various environments, from home inspections to professional jobsites.