--- product_id: 278688210 title: "CT20 Remote and Local Continuity Tester, green" brand: "extech" price: "€ 131.09" currency: EUR in_stock: true reviews_count: 5 category: "Extech" url: https://www.desertcart.be/products/278688210-ct20-remote-and-local-continuity-tester-green store_origin: BE region: Belgium --- # Compact 5.6cm size 9V battery powered Bi-color LED polarity indicator CT20 Remote and Local Continuity Tester, green **Brand:** extech **Price:** € 131.09 **Availability:** ✅ In Stock ## Summary > ⚡ Test smarter, not harder — continuity testing redefined. ## Quick Answers - **What is this?** CT20 Remote and Local Continuity Tester, green by extech - **How much does it cost?** € 131.09 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.be](https://www.desertcart.be/products/278688210-ct20-remote-and-local-continuity-tester-green) ## Best For - extech enthusiasts ## Why This Product - Trusted extech brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Rugged & Reliable:** Durable build engineered to withstand demanding job site conditions. - • **Bi-Color LED Probe:** Instantly identify polarity and continuity with red/green LED clarity. - • **One-Person Operation:** Streamline your workflow with effortless single-user wire testing. - • **Remote & Local Testing:** Seamlessly test continuity and polarity both nearby and remotely. - • **Pocket-Sized Portability:** Clip it, hang it, carry it—lightweight design built for on-the-go pros. ## Overview The Extech CT20 is a compact, battery-powered continuity tester featuring remote and local testing capabilities. Its standout bi-color LED probe simplifies polarity detection, while its lightweight, pocket-sized design ensures easy portability. Built rugged for professional use, it supports single-person operation and comes complete with test leads, a 9V battery, and carrying case—making it an indispensable tool for electricians and technicians. ## Description Continuity tester, length 3.6 in. , Function checks local continuity, remote continuity, and remote polarity, with power off, features pocket-sized, light weight, low power consumption, high quality rugged design, dual color (red/Green) remote probe for polarity identification, battery type 9v, includes 9 in. Test leads, remote dual color led probe with 11 in. Test leads, 9v battery, carrying case, and instructions. Review: Excellent outil, très pratique pour tout électricien ! - J'ai récemment acheté ce testeur de continuité sans fil et je dois dire que je suis extrêmement impressionné par sa performance. Tout d'abord, sa compacité le rend très pratique à transporter, ce qui est un énorme avantage pour moi car je suis constamment en déplacement sur différents chantiers. En ce qui concerne sa fiabilité, je n'ai rencontré aucun problème jusqu'à présent. Il détecte efficacement la continuité et ce que j'apprécie le plus, c'est qu'il donne également la polarité grâce à la couleur du voyant allumé. C'est un détail ingénieux qui rend l'utilisation de cet outil encore plus intuitive. En plus de cela, sa construction est solide et bien conçue, ce qui le rend durable et prêt à résister à une utilisation régulière sur le terrain. Je peux vraiment compter sur lui pour effectuer mes tests électriques en toute confiance. En résumé, ce testeur de continuité sans fil est un outil indispensable pour tout professionnel ou bricoleur sérieux. Compact, fiable, et offrant des fonctionnalités supplémentaires telles que la détection de polarité, il est vraiment bien sous tous les rapports. Je le recommande vivement à tous ceux qui recherchent un outil pratique et performant pour leurs travaux électriques. Review: Probador de continuidad - Funciona correctamente. ## Features - One person operation for wire and cable testing - Transmitter with output cables terminated in modular RJ11 phone connector - Remote continuity with the use of the remote probe - Flashing remote probe two lead, bi color (red/green) LED probe allows a single user to identify up to three wires or cables at a time - Lightweight and pocket sized, clips on and hangs from the cable(s) under test without falling off ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B000LYTTRK | | Best Sellers Rank | #101,871 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #470 in Multi Testers | | Brand | Extech | | Brand Name | Extech | | Color | green | | Colour | green | | Customer Reviews | 4.5 out of 5 stars 1,942 Reviews | | Global Trade Identification Number | 00793950000205 | | Included Components | Product & Instructions Guide | | Item Dimensions | 5.6 x 2.9 x 9.1 centimeters | | Item Weight | 0.1 Kilograms | | Item dimensions L x W x H | 5.6 x 2.9 x 9.1 centimeters | | Item weight | 0.1 Kilograms | | Manufacturer | Extech | | Measurement Type | Ohmmeter | | Minimum Operating Voltage | 9 Volts | | Model | CT20 | | Part Number | CT20 | | Power Source | Battery Powered | | Power source | Battery Powered | | Specification Met | CE | | Style | Standard | | Style Name | Standard | | UPC | 013161042406 793950000205 | | Unit Count | 1 Count | | Upper Temperature Rating | 149 Degrees Fahrenheit | ## Product Details - **Brand:** Extech - **Power source:** Battery Powered - **Style:** Standard - **Colour:** green - **Item weight:** 0.1 Kilograms ## Images ![CT20 Remote and Local Continuity Tester, green - Image 1](https://m.media-amazon.com/images/I/61n4wMm7trL.jpg) ## Questions & Answers **Q: Can this device be used to test the continuity of a single conductor wire instead of a conductor pair?** A: I wondered about that too so I asked my son in law he's an electrician according to him you can't do it remotely but it can be done without the remote option as long as you can get to both ends of the single wire which makes this device useless in most cases because most of the wires I would want to remotely test are single wire **Q: how many feet can be tested at one time ?** A: Not sure what your asking about how many feet? It is for finding continuous flow in wiring if your not sure which wire goes where. This is a video I used to help me to figure out a 4 way switch setup. http://www.thisoldhouse.com/toh/tv/ask-toh/video/0,,20785338,00.htmlHope it helps. **Q: Hooking tester in panel box is a probl locating grnd and neg. Can you attach rem to grounding bar to test for neg and grounding wire continuity?** A: You can test everything you want as long as the object that you want to test is de-energized **Q: do the units require any kind of recalibration or servicing to ensure it is still working correctly** A: No, none that I know of. It works fine and comes with instructions. It saves a lot of time and trouble, especially if you are working alone. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Excellent outil, très pratique pour tout électricien ! *by B***S on 29 March 2024* J'ai récemment acheté ce testeur de continuité sans fil et je dois dire que je suis extrêmement impressionné par sa performance. Tout d'abord, sa compacité le rend très pratique à transporter, ce qui est un énorme avantage pour moi car je suis constamment en déplacement sur différents chantiers. En ce qui concerne sa fiabilité, je n'ai rencontré aucun problème jusqu'à présent. Il détecte efficacement la continuité et ce que j'apprécie le plus, c'est qu'il donne également la polarité grâce à la couleur du voyant allumé. C'est un détail ingénieux qui rend l'utilisation de cet outil encore plus intuitive. En plus de cela, sa construction est solide et bien conçue, ce qui le rend durable et prêt à résister à une utilisation régulière sur le terrain. Je peux vraiment compter sur lui pour effectuer mes tests électriques en toute confiance. En résumé, ce testeur de continuité sans fil est un outil indispensable pour tout professionnel ou bricoleur sérieux. Compact, fiable, et offrant des fonctionnalités supplémentaires telles que la détection de polarité, il est vraiment bien sous tous les rapports. Je le recommande vivement à tous ceux qui recherchent un outil pratique et performant pour leurs travaux électriques. ### ⭐⭐⭐⭐⭐ Probador de continuidad *by O***R on 2 June 2025* Funciona correctamente. ### ⭐⭐⭐⭐⭐ Semplice e utile. *by A***A on 29 April 2025* Bell'aggeggino. Semplicissimo da usare e moto utile. ## Frequently Bought Together - Extech CT20 Remote and Local Continuity Tester - Southwire Tester; Continuity PRO 40040S - Klein Tools 80016 Circuit Breaker Finder Tool Kit with Accessories, 2-Piece Set, Includes Cat. No. ET310 and Cat. No. 69411 --- ## 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.be/products/278688210-ct20-remote-and-local-continuity-tester-green](https://www.desertcart.be/products/278688210-ct20-remote-and-local-continuity-tester-green) --- *Product available on Desertcart Belgium* *Store origin: BE* *Last updated: 2026-08-05*