2-in-1 Digital Voltage Tester Pen:Your go-to tool for fast, safe, and accurate electrical diagnostics — whether you're a pro electrician or home DIYer.

One-Key Measurement: Quickly measure AC voltage by default when powered on. Display shows \"0V\" until probe tip contacts a voltage >10V — then the screen turns red and sounds a beeping alarm for alert.

Live/Neutral Wire Detection:Switch to voltage mode for easy wire recognition: insert into the socket while touching the sensor — red screen and beeping sound = live wire, green screen with no sound = neutral wire.

NCV Non-Contact Voltage Detection: Switch to NCV mode (EF on screen). The closer you get to a power source, the stronger the signal — the display will change from EF to dashes (---) and beeping becomes faster.

 Wire Continuity Testing: In continuity mode (OL on screen), touch the electrode and use the tip to touch wire ends — perfect for checking wire connections without power.

LED Flashlight:Long press the S button for 3 seconds to activate the flashlight — essential for inspecting in dark or hard-to-reach areas.