Model B18 Electric Detection Pen No calibration required for immediate, reliable electrical diagnostics. This penshaped detector is ready to use, delivering accurate results with minimal setup. Detects AC voltage in the range of 12V to 240V, providing fast verification of live circuits during electrical work. Builtin audible buzzer and LED indicators deliver clear hazard warnings, enabling rapid decision making even in lowvisibility environments. Ergonomic ABS construction with a lightweight, penshaped design for comfortable onehanded operation during extended use. 1button operation simplifies the workflow, reducing the steps needed to perform tests and checks. Multifunctional tool that combines electric detection, circuit continuity testing, and breakpoint identification in a compact form factor. Suitable for enthusiasts, electricians, and professionals who require stable electric verification during installations, maintenance, or tasks. Use scenarios Installation verification: before wiring outlets, switches, or fixtures, use the detector to confirm absence of live voltage and to verify correct wiring. Circuit maintenance: test circuit continuity to ensure wires are intact and connections are secure, and identify potential breakpoints quickly. Appliance : diagnose wiring faults in panels or appliances by confirming voltage presence and tracing continuity issues for efficient repairs.