--- product_id: 413938665 title: "140mm 3mm Mains Tester Plain Slot Blade Neon 100-500Volts Circuit electricians Electrical Voltage Pen Flat Screwdriver Transparent Safety Insulated Handle Pocket Clip" brand: "toolstek" price: "€ 0.02" currency: EUR in_stock: false reviews_count: 8 url: https://www.desertcart.hr/products/413938665-140mm-3mm-mains-tester-plain-slot-blade-neon-100-500volts store_origin: HR region: Croatia --- # AC voltage 100-500V detection Neon indicator for instant live circuit feedback Fully insulated transparent handle for safety 140mm 3mm Mains Tester Plain Slot Blade Neon 100-500Volts Circuit electricians Electrical Voltage Pen Flat Screwdriver Transparent Safety Insulated Handle Pocket Clip **Brand:** toolstek **Price:** € 0.02 **Availability:** ❌ Out of Stock ## Summary > ⚡ Light up your toolkit with instant, safe voltage testing! ## Quick Answers - **What is this?** 140mm 3mm Mains Tester Plain Slot Blade Neon 100-500Volts Circuit electricians Electrical Voltage Pen Flat Screwdriver Transparent Safety Insulated Handle Pocket Clip by toolstek - **How much does it cost?** € 0.02 with free shipping - **Is it available?** Currently out of stock - **Where can I buy it?** [www.desertcart.hr](https://www.desertcart.hr/products/413938665-140mm-3mm-mains-tester-plain-slot-blade-neon-100-500volts) ## Best For - toolstek enthusiasts ## Why This Product - Trusted toolstek brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Multi-Function Testing:** Checks continuity, fuses, short circuits, cable tracking, and even microwave leakage—your all-in-one circuit companion. - • **Safety-First Insulation:** Transparent, fully insulated handle ensures secure grip and protection during testing. - • **User-Friendly Operation:** Simple neon indicator and ergonomic design make it perfect for quick, reliable checks by electricians and DIYers alike. - • **Compact & Portable Design:** Slim 140mm length with 3mm flat slot blade fits easily in pockets or toolkits for on-the-go pros. - • **Instant Voltage Detection:** Neon light glows bright on live circuits from 100 to 500 volts, eliminating guesswork. ## Overview The TOOLSTEK WOKIN 140mm Mains Tester is a compact, reliable electrical voltage pen designed for professionals and DIY enthusiasts. Featuring a neon indicator that instantly lights up when detecting live AC voltage between 100-500 volts, it offers quick, accurate circuit testing. Its fully insulated transparent handle ensures user safety, while the slim 3mm flat slot blade fits standard outlets and terminals. Lightweight and portable with a pocket clip, this tester supports multiple functions including continuity and fuse checks, making it an essential, affordable tool for everyday electrical diagnostics. ## Description TOOLSTEK 140mm 3mm Mains Tester Plain Slot Blade Neon 100-500Volts Circuit electricians Electrical Voltage Pen Flat Screwdriver Transparent Safety Insulated Handle Pocket Clip : desertcart.co.uk: DIY & Tools Review: Good - I recently added the TOOLSTEK WOKIN 140mm Mains Tester to my toolbox, a straightforward tool designed for testing electrical circuits within the 100-500 volt range. Here’s a detailed look at its performance and utility. Functionality and Ease of Use The TOOLSTEK WOKIN Mains Tester is aimed at providing a quick and easy way to check for live circuits. It features a plain slot blade tip that easily inserts into standard outlets and terminal blocks. The neon indicator in the handle lights up when the tip detects voltage, which makes it very user-friendly even for those who aren't professional electricians. This tester is particularly useful for quick checks around the house or on job sites. Design and Build Quality With a length of 140mm and a blade width of 3mm, this tester is compact and easy to handle. The build quality feels robust, capable of withstanding the rigors of frequent use. The handle is designed to be comfortable to hold, which is a plus during extended use. The inclusion of a neon light within the handle is a simple yet effective design choice that offers clear visibility and immediate feedback. Safety Features Safety is paramount when dealing with electrical testing, and this tester is equipped with basic features to ensure user safety. However, it’s important to always ensure that the tool is used within its voltage range and operational guidelines. While the tester does a good job for its intended use, additional insulation on the handle would be beneficial for enhancing safety during use. Portability This mains tester’s size makes it highly portable. It can easily be carried in a pocket, toolkit, or even clipped to a belt, which is ideal for those who need to move around or climb ladders while working. Value for Money For a tool that performs a crucial function, the TOOLSTEK WOKIN Mains Tester is reasonably priced. It’s not only affordable but also reliable for basic electrical testing, making it a great value for both DIY enthusiasts and professional users. Overall Impressions The TOOLSTEK WOKIN 140mm Mains Tester is a handy tool for anyone needing to check for live electrical circuits regularly. It offers straightforward functionality, decent build quality, and practical design, all at an affordable price point. While it may not have the advanced features of more sophisticated testers, it perfectly fulfills the role of a basic voltage tester, making it a worthwhile addition to any toolkit. Review: Value for money - Excellent product ## Features - Mains Tester Screwdriver is fitted with a neon indicator in the clear plastic handle which illuminates when the point of the tester is touched on a live voltage source of between 120-250 volts and an earthing contact is made with the metal stud on the top of the handle. - Main tester is fully insulated and is supplied complete with full operating instructions and will perform the following tests: continuity, bulbs, fuses, short circuits, cable tracking, mains sockets and microwave oven leakage. - Main tester will test electricity up to 250 volts. Hold the Main tester by the insulated handle, do not touch any part of the exposed metal blade. Always test the Main tester before you start by contact with a known live power source. You do not need to touch the touch pad at the top of the Main tester (although it is perfectly safe to do so). - The red LED will glow brightly when the Main tester metal blade is in contact with a live circuit, indicating that it is functioning correctly. - Hold the index finger against the cap end of the electric pen, thumb and middle finger, and gently pinch the electric pen with your ring finger to keep it stable, and then insert the metal nib into the socket panel hole on the wall or the external power strip socket hole. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B099PPSQMH | | Best Sellers Rank | 87,819 in DIY & Tools ( See Top 100 in DIY & Tools ) 130 in Voltage Testers | | Brand | TOOLSTEK | | Colour | Red | | Customer Reviews | 4.4 4.4 out of 5 stars (382) | | Included Components | SCREDRIVER | | Manufacturer | WOKIN | | Maximum Operating Voltage | 500 Volts | | Minimum Operating Voltage | 100 Volts (AC) | | Power Source | Electricity | | Specification Met | CE | | Style Name | Safety | ## Product Details - **Brand:** TOOLSTEK - **Colour:** Red - **Min. Operating voltage:** 100 Volts (AC) - **Power source:** Electricity - **Style:** Safety ## Images ![140mm 3mm Mains Tester Plain Slot Blade Neon 100-500Volts Circuit electricians Electrical Voltage Pen Flat Screwdriver Transparent Safety Insulated Handle Pocket Clip - Image 1](https://m.media-amazon.com/images/I/51GSDcPTzwL.jpg) ![140mm 3mm Mains Tester Plain Slot Blade Neon 100-500Volts Circuit electricians Electrical Voltage Pen Flat Screwdriver Transparent Safety Insulated Handle Pocket Clip - Image 2](https://m.media-amazon.com/images/I/31Z-m17duJL.jpg) ![140mm 3mm Mains Tester Plain Slot Blade Neon 100-500Volts Circuit electricians Electrical Voltage Pen Flat Screwdriver Transparent Safety Insulated Handle Pocket Clip - Image 3](https://m.media-amazon.com/images/I/51uO87Y6NWL.jpg) ![140mm 3mm Mains Tester Plain Slot Blade Neon 100-500Volts Circuit electricians Electrical Voltage Pen Flat Screwdriver Transparent Safety Insulated Handle Pocket Clip - Image 4](https://m.media-amazon.com/images/I/61cjan2YT3L.jpg) ![140mm 3mm Mains Tester Plain Slot Blade Neon 100-500Volts Circuit electricians Electrical Voltage Pen Flat Screwdriver Transparent Safety Insulated Handle Pocket Clip - Image 5](https://m.media-amazon.com/images/I/61zglBc7D-L.jpg) ## Customer Reviews ### ⭐⭐⭐⭐⭐ Good *by P***. on 15 July 2024* I recently added the TOOLSTEK WOKIN 140mm Mains Tester to my toolbox, a straightforward tool designed for testing electrical circuits within the 100-500 volt range. Here’s a detailed look at its performance and utility. Functionality and Ease of Use The TOOLSTEK WOKIN Mains Tester is aimed at providing a quick and easy way to check for live circuits. It features a plain slot blade tip that easily inserts into standard outlets and terminal blocks. The neon indicator in the handle lights up when the tip detects voltage, which makes it very user-friendly even for those who aren't professional electricians. This tester is particularly useful for quick checks around the house or on job sites. Design and Build Quality With a length of 140mm and a blade width of 3mm, this tester is compact and easy to handle. The build quality feels robust, capable of withstanding the rigors of frequent use. The handle is designed to be comfortable to hold, which is a plus during extended use. The inclusion of a neon light within the handle is a simple yet effective design choice that offers clear visibility and immediate feedback. Safety Features Safety is paramount when dealing with electrical testing, and this tester is equipped with basic features to ensure user safety. However, it’s important to always ensure that the tool is used within its voltage range and operational guidelines. While the tester does a good job for its intended use, additional insulation on the handle would be beneficial for enhancing safety during use. Portability This mains tester’s size makes it highly portable. It can easily be carried in a pocket, toolkit, or even clipped to a belt, which is ideal for those who need to move around or climb ladders while working. Value for Money For a tool that performs a crucial function, the TOOLSTEK WOKIN Mains Tester is reasonably priced. It’s not only affordable but also reliable for basic electrical testing, making it a great value for both DIY enthusiasts and professional users. Overall Impressions The TOOLSTEK WOKIN 140mm Mains Tester is a handy tool for anyone needing to check for live electrical circuits regularly. It offers straightforward functionality, decent build quality, and practical design, all at an affordable price point. While it may not have the advanced features of more sophisticated testers, it perfectly fulfills the role of a basic voltage tester, making it a worthwhile addition to any toolkit. ### ⭐⭐⭐⭐⭐ Value for money *by A***R on 3 October 2025* Excellent product ### ⭐⭐⭐⭐ Absolutely fine for a quick cable test. *by J***N on 1 January 2026* Cheap but does the job. Successfully identified a live wire. ## Frequently Bought Together - TOOLSTEK 140mm 3mm Mains Tester Plain Slot Blade Neon 100-500Volts Circuit electricians Electrical Voltage Pen Flat Screwdriver Transparent Safety Insulated Handle Pocket Clip - Faithfull FAITAPEPVCBK Black PVC Electrical Tape 19mm x 20M - KAIWEETS HT100S Voltage Tester, Dual-Range 12V-1000V/70V 1000V Non-Contact Electric Tester, Sensitivity Electric Compact Pen with NCV, LED Flashlight, Buzzer Alarm, Wire Breakpoint Finder --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.hr/products/413938665-140mm-3mm-mains-tester-plain-slot-blade-neon-100-500volts](https://www.desertcart.hr/products/413938665-140mm-3mm-mains-tester-plain-slot-blade-neon-100-500volts) --- *Product available on Desertcart Croatia* *Store origin: HR* *Last updated: 2026-04-25*