--- product_id: 2175252 title: "Extech CT20 Remote and Local Continuity Tester with Remote Probe" brand: "extech" price: "₹ 9166" currency: INR in_stock: true reviews_count: 13 category: "Extech" url: https://www.desertcart.in/products/2175252-extech-ct20-remote-and-local-continuity-tester-with-remote-probe store_origin: IN region: India --- # Tests cables up to 10,000 ft 85dB loud audible beeper Battery-powered for field use Extech CT20 Remote and Local Continuity Tester with Remote Probe **Brand:** extech **Price:** ₹ 9166 **Availability:** ✅ In Stock ## Summary > 🔌 Trace it. Test it. Own it. The ultimate solo continuity tester for pros on the move. ## Quick Answers - **What is this?** Extech CT20 Remote and Local Continuity Tester with Remote Probe by extech - **How much does it cost?** ₹ 9166 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.in](https://www.desertcart.in/products/2175252-extech-ct20-remote-and-local-continuity-tester-with-remote-probe) ## 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 - • **Versatile Across Trades:** Perfect for electricians, HVAC pros, telecom installers, and DIYers tackling home, automotive, or commercial wiring. - • **One-Person Cable Mastery:** Detachable remote probe lets you trace and label wires solo across massive distances—no assistant needed. - • **Built Rugged for Real Work:** Heavy-duty housing and professional alligator clips ensure secure, reliable connections on every job site. - • **Clear Signals in Any Environment:** Bright LED flashes and a loud pulsating beeper cut through noise and chaos for instant continuity confirmation. - • **Time-Saving Long-Distance Testing:** Effortlessly check wiring across rooms, floors, or entire buildings—speed up diagnostics and beat deadlines. ## Overview The Extech CT20 is a professional-grade continuity tester featuring a detachable remote probe for one-person operation up to 10,000 feet. It combines bright LED and loud audible indicators to ensure accurate cable testing in noisy environments. Ruggedly built with alligator clips and battery-powered portability, it’s ideal for electricians, installers, and maintenance technicians working on HVAC, telecom, automotive, and home wiring projects. ## Description Product Description The Extech CT20 Remote & Local Continuity Tester is built for technicians who need fast, reliable cable tracing without unnecessary complications. Designed with a remote probe that lets you test long cable runs across rooms, floors, or large installations, the CT20 makes it easy to identify wiring faults without requiring an extra set of hands. This professional-grade tool offers both audible tones and bright LED indicators, providing immediate confirmation of continuity even in challenging work environments. Whether you're working on telecom lines, HVAC control wiring, security systems, automotive circuits, or low-voltage electrical installations, the CT20 delivers the accuracy and efficiency needed to diagnose issues quickly. Lightweight, portable, and rugged enough for field conditions, the Extech CT20 is the go-to continuity tester for electricians, installers, and maintenance technicians who demand dependable performance and streamlined operation. From the Manufacturer An electronic tool for electricians, alarm, cable installers and others who routinely need to check circuits for continuity and also identify cables and wires. It allows a single user to quickly identify and label two wires even when the wire ends are located in different rooms.85dB beeper. Tests wire lengths up to 10,000-Foot (3,000m) 26 gauge minimum. CE approved. Complete with Continuity Tester, Remote Probe with Bi-Color LED, 9V battery, and carrying case. Review: Great product - I haven't had it long, but I bought with a need to trace some electrical wires at a couple of sites and it hasn't disappointed me yet. It's been working great. As others have mentioned, if you're only tracing 1 wire, you can attach the other (black) lead to ground with the main device and the remote, and the red lead to the wire you're testing, and that works. It's been pretty accurate for me up to 50 feet, which is all I tested. Highly recommended for your electrical toolbag, and I'd definitely buy it again. Worth it at this price for the time it's saved me. Review: Used to trace doorbell wiring... works like a charm. - I'm sure there are competitor products out there... but I really like this as a non-electrician. I don't have to relearn multi-meter functions to figure this thing out. It took me a matter of seconds to trace my doorbell wiring and gives an audible sound. I wish I had this years ago when I renovated a 1950s home and replaced much of the wiring that had been installed incorrectly by the homeowner. One of the best products I've purchased. ## Features - RELIABLE CONTINUITY TESTING: Quickly check for shorts and opens in cables and wires. Perfect for electricians and DIYers working on home wiring, automotive circuits, or remote cables. - ONE-PERSON OPERATION: Features a unique detachable Remote Probe that allows a single user to identify and label long-distance wire runs (up to 10,000ft/3,000m) without needing an assistant. - LED & AUDIBLE INDICATORS: Bright flashing LED and loud pulsating beeper provide clear signals even in noisy environments. Includes a "Local" and "Remote" mode to ensure total circuit accuracy. - PERFECT FOR LONG-DISTANCE CABLE RUNS: Ideal for checking wiring across rooms, hallways, or entire buildings with the included remote probe, saving time on large-scale installations and maintenance tasks. - HEAVY-DUTY DESIGN: Built for the field with a rugged housing and professional-grade alligator clips for secure connections during testing. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B000LYTTRK | | Best Sellers Rank | #107,960 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #156 in Multi Testers | | Brand | Extech | | Brand Name | Extech | | Color | green | | Customer Reviews | 4.5 out of 5 stars 2,002 Reviews | | Global Trade Identification Number | 00793950000205 | | Included Components | Product & Instructions Guide | | Item Dimensions | 2.2 x 1.14 x 3.6 inches | | Item Highlight | Detachable remote probe, one-person cable testing, LED and audible tone, alligator clips, HVAC/telecom | | Item Weight | 0.1 kg | | Item dimensions L x W x H | 2.2 x 1.14 x 3.6 inches | | Manufacturer | Extech | | Measurement Type | Ohmmeter | | Model | CT20 | | Number of Items | 1 | | Part Number | CT20 | | Power Source | Battery Powered | | Style | CT20 | | Style Name | CT20 | | UPC | 013161042406 793950000205 | | Unit Count | 1 Count | | Upper Temperature Rating | 149 °F | | Warranty Description | 1 year | ## Product Details - **Brand:** Extech - **Color:** green - **Item Weight:** 0.1 kg - **Power Source:** Battery Powered - **Style:** CT20 ## Images ![Extech CT20 Remote and Local Continuity Tester with Remote Probe - Image 1](https://m.media-amazon.com/images/I/61n4wMm7trL.jpg) ## Available Options This product comes in different **Style** options. ## 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 ### ⭐⭐⭐⭐⭐ Great product *by A***B on October 10, 2019* I haven't had it long, but I bought with a need to trace some electrical wires at a couple of sites and it hasn't disappointed me yet. It's been working great. As others have mentioned, if you're only tracing 1 wire, you can attach the other (black) lead to ground with the main device and the remote, and the red lead to the wire you're testing, and that works. It's been pretty accurate for me up to 50 feet, which is all I tested. Highly recommended for your electrical toolbag, and I'd definitely buy it again. Worth it at this price for the time it's saved me. ### ⭐⭐⭐⭐⭐ Used to trace doorbell wiring... works like a charm. *by D***N on June 19, 2021* I'm sure there are competitor products out there... but I really like this as a non-electrician. I don't have to relearn multi-meter functions to figure this thing out. It took me a matter of seconds to trace my doorbell wiring and gives an audible sound. I wish I had this years ago when I renovated a 1950s home and replaced much of the wiring that had been installed incorrectly by the homeowner. One of the best products I've purchased. ### ⭐⭐⭐⭐⭐ Only one my boss... *by M***. on June 13, 2026* trusts. So, he paid to get two more. ## 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. 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