---
product_id: 278688210
title: "Extech CT20 Remote and Local Continuity Tester, green"
brand: "extech"
price: "Bs.1125"
currency: BOB
in_stock: true
url: https://www.desertcart.bo/products/278688210-extech-ct20-remote-and-local-continuity-tester-green
store_origin: BO
region: Bolivia
---

# Compact 5.6cm size Battery powered, low consumption Bi-color LED polarity indicator Extech CT20 Remote and Local Continuity Tester, green

**Brand:** extech
**Price:** Bs.1125
**Availability:** ✅ In Stock

## Summary

> 🔌 Test smarter, not harder — continuity at your fingertips!

## Quick Answers

- **What is this?** Extech CT20 Remote and Local Continuity Tester, green by extech
- **How much does it cost?** Bs.1125 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.bo](https://www.desertcart.bo/products/278688210-extech-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

- • **One-Person Operation:** Streamline your workflow with effortless single-user wire and cable testing.
- • **Modular RJ11 Connectivity:** Seamlessly test phone lines with integrated RJ11 output cables.
- • **Lightweight & Pocket-Sized:** Carry convenience everywhere—clips securely to cables without slipping.
- • **Remote Continuity Detection:** Pinpoint cable continuity remotely using the flashing dual-color probe.
- • **Polarity Identification Made Easy:** Dual red/green LED probe instantly reveals wire polarity for faster diagnostics.

## Overview

The Extech CT20 is a rugged, pocket-sized continuity tester designed for professional wire and cable diagnostics. Featuring a bi-color LED remote probe for polarity and continuity checks, modular RJ11 connectors, and low power consumption, it enables efficient single-person operation with reliable results on the go.

## Description

Extech CT20 Remote and Local Continuity Tester, green

## 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 |
|---------------|-------|
| Manufacturer | Extech |
| Part number | CT20 |
| Item Weight | 100 g |
| Product Dimensions | 5.59 x 2.9 x 9.15 cm; 100 g |
| Batteries | 1 AA batteries required. (included) |
| Item model number | CT20 |
| Size | 2 |
| Color | green |
| Style | Standard |
| Material | ABS |
| Item thickness | 1 Inches |
| Power source type | Battery Powered |
| Item Package Quantity | 1 |
| Number Of Pieces | 1 |
| Specification met | CE |
| Included components | Product & Instructions Guide |
| Batteries Included? | Yes |
| Batteries Required? | Yes |
| Battery Cell Type | Alkaline |

## Product Details

- **Brand:** Extech
- **Power source:** Battery Powered
- **Style:** Standard
- **Colour:** green
- **Item weight:** 0.1 Kilograms

## Images

![Extech CT20 Remote and Local Continuity Tester, green - Image 1](https://m.media-amazon.com/images/I/71YnTuNcNgL.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.

## 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

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*Product available on Desertcart Bolivia*
*Store origin: BO*
*Last updated: 2026-02-22*