- Dual functionality tool: Electrician-grade dual-purpose tester that screws, detects, and opens/ closes circuits effortlessly for professionals and hobbyists. - Smart wire identification: Identifies live and neutral wires by touching the pen cap while tracing lines to locate connections and disconnections along the way. - Screwdriver heads: Slotted cross dual-purpose head adapts to various tasks, whether at home or on-site, so you have what you need at hand. - Home wiring projects: Identify live wires before touching conductors when replacing outlets or switches, trace circuits through walls, and use the tool to screw and secure connections as needed. - On-site service calls: Quickly locate circuits, follow wire paths to identify disconnections, and perform fastener tasks to verify changes. - DIY and maintenance: Handle common wiring tasks with a single versatile tool that combines wire identification, circuit handling, and fastener capability.