--- 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: "€ 9.45" currency: EUR in_stock: true category: "Toolstek" url: https://www.desertcart.gr/products/413938665-140mm-3mm-mains-tester-plain-slot-blade-neon-100-500volts store_origin: GR region: Greece --- # 100-500V voltage range Neon indicator for live circuit detection 140mm length, 3mm slot blade 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:** € 9.45 **Availability:** ✅ In Stock ## Summary > ⚡ Test Smarter, Work Safer — Never Miss a Live Wire! ## 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?** € 9.45 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.gr](https://www.desertcart.gr/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 - • **Portable Power Tool:** Compact 140mm design with pocket clip keeps your essential tester always within reach. - • **Precision Engineering:** Slim 3mm slot blade fits standard outlets and terminal blocks with ease. - • **Ergonomic & Transparent:** Comfort grip with clear insulated handle ensures safety and visibility during use. - • **Trusted Safety Compliance:** CE certified for reliable performance and peace of mind on every job. - • **Instant Live Voltage Detection:** Neon indicator glows bright on 100-500V live circuits for immediate feedback. ## Overview The TOOLSTEK 140mm Mains Tester is a compact, CE-certified electrical voltage pen designed for quick and safe detection of live circuits between 100-500 volts. Featuring a neon indicator embedded in a transparent insulated handle and a precise 3mm slot blade, it offers professional-grade reliability and portability for electricians and DIY pros alike. ## 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 ## 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 | 13,823 in DIY & Tools ( See Top 100 in DIY & Tools ) 15 in Voltage Testers | | Brand | TOOLSTEK | | Colour | Transparent | | Country Of Origin | China | | Customer Reviews | 4.5 4.5 out of 5 stars (408) | | Included Components | SCREDRIVER | | Manufacturer | WOKIN | | Manufacturer Part Number | TK-1053 | | Maximum Operating Voltage | 500 Volts | | Minimum Operating Voltage | 100 Volts (AC) | | Number of Items | 1 | | Number of Packs | 1 | | Power Source | Electricity | | Specification Met | CE | | Style Name | Safety | | Unit Count | 1.0 count | ## Product Details - **Brand:** TOOLSTEK - **Colour:** Transparent - **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/31ZN+OdD8-L.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/41on12fIGvL.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/41Nv2zSz+KL.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/41AgeUm4tYL.jpg) ## 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.gr/products/413938665-140mm-3mm-mains-tester-plain-slot-blade-neon-100-500volts](https://www.desertcart.gr/products/413938665-140mm-3mm-mains-tester-plain-slot-blade-neon-100-500volts) --- *Product available on Desertcart Greece* *Store origin: GR* *Last updated: 2026-10-13*