Multifunctional Voltage Tester Pen, LED Display Test Pen 12-250V Self-Test Circuit DC AC Power Fault Testing, Portable Carbon Steel Detection Tool with Light (with

[Reliable and Durable] Made of premium carbon steel for reliability and durability.
[Clear Readings] The blue digital display ensures clear readings even in dark environments.
[Easy to Use] The user-friendly LED switch makes operation simple.
[Portable Design] Insulated cover with a clamp/holder for convenient hanging and transport.
[Multifunctional] Perform self-tests, metal circuit tests, power failure tests, AC/DC voltage tests, and high-voltage tests with a single tool.