It has a neon in it. A neon works on a tiny amount of current. The screwdriver has a metal top at the back, and the neon sits between that and the tip of the screwdriver. If you press the tip against mains electricity and press your thumb against the metal top, a tiny current passes through the neon and you. It's not enough for you to notice, but it is enough to light the neon.

how does it allow you to distinguish between the live and neutral wire? does it glow a different colour?

It doesn't. It merely glows if you touch the blade onto a live 220v wire with your thumb or finger on the ferrule at the top of the handle. This is usually used to ensure that the power is disconnected from what you are working on.

What type of batteries does this take, as mine didn't come with any

It doesn’t need batteries. When you touch the blade on the conductor you’re testing, with a finger on the handle cap, you create a path for current to flow from the conductor, through a neon lamp, and into your finger, causing the lamp to illuminate if a voltage is present. Needless to say, the current is very small and harmless.

Why is neon light not showing after inserting into live socket?

Hello, please confirm whether the gesture of using the screwdriver is correct. If the neon light still does not light up correctly, please contact us to send a new electric screwdriver. ...

Desertcart Logo

Deliver to Malaysia

For best experience Get the App

DOWNLOAD THE APP

WE SOURCE ITEMS FROM

UAE
UK
India
USA
Japan
KOREA

Customer Services

About Us

Customer Support

Description

⚡ Test Smarter, Work Safer – The Essential Voltage Pen for Pros

NO BATTERIES NEEDED - Always ready to work—no downtime, no hassle.
ERGONOMIC ABS TPR HANDLE - Comfort meets control for extended use without fatigue.
COMPACT LIGHTWEIGHT DESIGN - Only 75mm long and 40g—perfect for on-the-go professionals.
INSTANT 220 V VOLTAGE DETECTION - Stay safe and confident with precise mains voltage testing at your fingertips.
DURABLE CHROME VANADIUM STEEL TIP - Engineered for longevity and reliable contact in every test.

The Eightwood Electric Tester Pen is a compact, 220V mains voltage detector featuring a durable chrome-vanadium steel tip and an ergonomic ABS+TPR handle. Lightweight and battery-free, it offers quick, reliable electrical testing for professionals seeking safety and efficiency in a sleek, portable tool.

Reviews

M**1

Good product

Item arrived as described. Good little too.

14.09.2025

S**I

Really making it working on electrical stuff done easy

It’s good quality and functionality for such price and very easy to use. Saved me more than its price. Very happy

25.10.2024

A**R

This screwdriver works great and does the job.

Delivery was great and they followed my instructions.This screwdriver works great and does the job.Thanks

21.09.2025

J**S

Electrical pen tester

Does the job

7.06.2025

S**

Tests perfectly

Works well

6.02.2025

G**G

Seems OK, but

...not as bright as I had hoped, and it may prove a little difficult to see in bright light or daylight conditions.

1.09.2024

T**C

Dangerous bit of kit as i

Doesn’t light up, expensive small screwdriver !!

10.02.2025

R**Y

Return

Didn't work returned it no replacement or refund.

30.06.2025

Common Questions

Are the products genuine and authentic?+

Yes, all products are sourced directly from authorized retailers in the US, UK, UAE and India. We maintain strict quality control processes and verify each product before shipping. All items come with applicable manufacturer warranties and are covered by our standard return policy.

How long does delivery take and is it reliable?+

Delivery times vary by destination country, typically ranging from 3-9 business days. Each order is fully trackable through our system. We handle all customs clearance and use reliable courier partners for last-mile delivery. You'll receive regular updates about your order status via email and our app.

What is Desertcart? Is it safe to order from?+

Desertcart is an international e-commerce platform operating since 2014. We securely process thousands of orders globally each day. Every product goes through our quality verification process before delivery, and we provide end-to-end order tracking, 24/7 customer support, and a comprehensive returns policy to ensure a safe shopping experience.

How is product pricing calculated?+

Our prices include the product cost, international shipping, import duties, customs clearance, and local delivery charges. We handle all customs and import procedures, ensuring there are no hidden fees upon delivery. PRO members receive additional benefits including free shipping.

ChatGPT - opens in a new tab Perplexity - opens in a new tab Claude - opens in a new tab Grok - opens in a new tab Google AI - opens in a new tab

Trustpilot

TrustScore 4.5 | 7,300+ reviews

Farhan Q.

The delivery time was excellent, and the packaging was secure.

2 months ago

Ali H.

Fast shipping and excellent packaging. The Leatherman tool feels very premium and sturdy.

1 day ago

View all Trustpilot reviews

Manufacturer	RFSolution
Part Number	EWTEST003UK
Product Dimensions	16 x 3 x 3 cm; 40 g
Item model number	EWTEST003UK
Colour	Yellow,green
Style	Compact
Material	Chrome-Vanadium Steel, ABS+TPR
Power Source	Electric
Item Package Quantity	1
Head Style	Flat
Special Features	Insulated
Included Components	Handle
Batteries included?	No
Batteries Required?	No
Item Weight	40 g

Eightwood Pen Electric Tester Mains Tester Screwdriver Electrical Screwdriver 220V Voltage Electrical Pen 220V Voltage Electric with Test Power Detector Probe

Details

Description

Specifications

Have a Question? See What Others Asked

Reviews

Common Questions