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Two slim voltage detector pens with neon tubes and dual screwdriver tips

Generic WuJuntool 2Pcs Voltage Detector Pen AC/DC 100-500V Neon Tube Circuit Tester

SKU CH-HDDY-WF8DA

Two-piece voltage detector pen tests AC/DC circuits from 100-500V with a neon tube indicator and includes slotted and cross-recess screwdriver tips

  • Team affiliation2 Piece
  • Key featuresVoltage Detector Pen Screwdriver With Slotted Tip And Cross-
  • Overall height0.5 L x 0.1 W x 0.1 H inches
  • Overall width0.5 L x 0.1 W x 0.1 H inches
  • Overall length0.5 L x 0.1 W x 0.1 H inches
  • Product weight0.1 oz
  • Detects AC/DC voltage from 100-500V with neon brightness indicating level
  • Dual-purpose tool combines circuit tester and screwdriver in one
  • Slotted and cross-recess tips cover two common fastener types
  • No battery required for immediate, maintenance-free operation
  • Compact 0.5 x 0.1 x 0.1 inch size fits easily in tool pockets

Two-in-one voltage tester and screwdriver

This set includes two pens that detect AC or DC voltage from 100 to 500 volts and double as screwdrivers. Each metal rod carries a slotted tip on one end and a cross-recess tip on the other. The neon tube glows brighter as voltage rises, giving a quick visual cue. The tool needs no battery and is ready to use straight from the pack.

Indoor use and light interference

The manufacturer states the tester is intended for indoor use only. Strong ambient light can wash out the neon glow, making it harder to confirm whether a circuit is live. Users must keep the tip fully seated in the handle to maintain reliable contact while testing. No ingress-protection rating is provided, so outdoor or damp environments should be avoided.

100 to 500 volt detection range

The neon indicator only responds within the 100 to 500 volt window. Circuits below 100 volts will not light the tube, and voltages above 500 volts fall outside the specified range. Buyers who need to verify low-voltage control wiring or test mains above 500 volts should choose a different instrument.

How it compares

Measured against everything we stock in Multimeters & Electrical Testers, at today’s prices. Recalculated every night.

Price $15.99
Cheaper than about 91% of the 971 comparable items (median $30.99).

Specifications

Product
Brand nameGeneric, WuJuntool
Product typeVoltage
Size & build
Overall height0.5 L x 0.1 W x 0.1 H inches
Overall width0.5 L x 0.1 W x 0.1 H inches
Overall length0.5 L x 0.1 W x 0.1 H inches
Product weight0.1 oz
More details
Team affiliation2 Piece

Questions about this item

Should I choose the slotted tip or the cross-recess tip for my task?

Each pen has both tip types on opposite ends of the metal rod; use the slotted tip for flat-head screws and the cross-recess tip for Phillips-head screws.

What does the 100-500V range mean when I am testing a live circuit?

The neon tube will glow when voltage between 100V and 500V AC or DC is present; a brighter glow indicates a higher voltage within that range.

How does the neon tube indicator work without a battery?

The tool uses a passive neon tube that lights directly from the circuit voltage when you hold the end contact and touch the probe to a live conductor.

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