--- product_id: 546512393 title: "Klein Tools ET450 Advanced Circuit Breaker Finder and Wire Tracer Kit & RT390 Circuit Analyzer with Large LCD, Identifies Wiring Faults, GFCI and AFCI Tester, Voltage Drop, Displays Trip Time, Orange" brand: "klein tools" price: "S$817" currency: SGD in_stock: true reviews_count: 6 category: "Klein Tools" url: https://www.desertcart.sg/products/546512393-klein-tools-et450-advanced-circuit-breaker-finder-and-wire-tracer store_origin: SG region: Singapore --- # Large color LCD for clear fault diagnostics Signal detection through walls & underground Dual wiring fault & AFCI/GFCI device testing Klein Tools ET450 Advanced Circuit Breaker Finder and Wire Tracer Kit & RT390 Circuit Analyzer with Large LCD, Identifies Wiring Faults, GFCI and AFCI Tester, Voltage Drop, Displays Trip Time, Orange **Brand:** klein tools **Price:** S$817 **Availability:** ✅ In Stock ## Summary > ⚡ Empower your electrical expertise with precision and clarity! ## Quick Answers - **What is this?** Klein Tools ET450 Advanced Circuit Breaker Finder and Wire Tracer Kit & RT390 Circuit Analyzer with Large LCD, Identifies Wiring Faults, GFCI and AFCI Tester, Voltage Drop, Displays Trip Time, Orange by klein tools - **How much does it cost?** S$817 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.sg](https://www.desertcart.sg/products/546512393-klein-tools-et450-advanced-circuit-breaker-finder-and-wire-tracer) ## Best For - klein tools enthusiasts ## Why This Product - Trusted klein tools brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Advanced Fault Detection:** Identify wiring faults including open neutral/ground and test AFCI/GFCI devices with trip time and current metrics. - • **Precision Circuit Tracing:** Pinpoint energized or dead breakers, fuses, and wires with adjustable sensitivity—never guess again. - • **Professional-Grade Display:** Large, vibrant LCD delivers instant, easy-to-understand diagnostics for faster, smarter decisions. - • **Versatile Signal Penetration:** Detect signals through drywall, cement, and underground for ultimate job site flexibility. - • **Intuitive Visual & Audible Alerts:** Stay in control with clear signal strength indicators that keep you informed on the go. ## Overview The Klein Tools ET450 & RT390 combo kit offers professional-grade circuit breaker tracing and advanced outlet analysis. With adjustable sensitivity for signal detection through various materials, a large color LCD for clear fault identification, and comprehensive AFCI/GFCI testing capabilities, this kit ensures accurate diagnostics and enhanced safety for electricians and serious DIYers alike. ## Description Klein Tools ET450 Advanced Circuit Breaker Finder and Wire Tracer Kit for Energized and Non-Energized Breakers, Fuses, and WiresThe Klein Tools ET450 Advanced Circuit Tracer Kit is a professional tracer for energized and non-energized breakers, fuses, and wires. When the Transmitter is connected to a circuit, the Receivers sensitivity can easily be adjusted to detect the transmitted signal on breakers, fuses, and wire through drywall, cement block, and underground. Kit comes with transmitter, receiver, blade and ground prongs, alligator clips, 3-Foot and 20-Foot lead adapters, AC plug leads, instructions, all required batteries, and a hard carrying case with handle for convenient transportation and storage.Klein Tools RT390 Circuit Analyzer with Large LCD, Identifies Wiring Faults, GFCI and AFCI Tester, Voltage Drop, Displays Trip Time, OrangeThe Klein Tools RT390 is a Circuit Analyzer that tests the wiring conditions at an electrical outlet, displays AC line voltage, inspects AFCI and GFCI devices with time to trip device, and performs voltage drop tests at 12A, 15A and 20A current loads. Results are easy to understand with large, color LCD. The tester is designed for use with North American 120V AC 3-wire electrical outlets. For more than 160 years, Klein Tools has manufactured premium-quality, professional-grade hand tools that deliver the performance, durability and precision needed to get the job done right. Our family of engineers, workers and craftsman continue to put six generations of expertise into every tool we create by using only the highest quality materials, superior workmanship, and keeping manufacturing as close to home as we can. Klein isn't just the name of our company, it's also our family name. And since we're an American company that's family-owned and family-run, you know you can count on us to be here tomorrow. Klein Tools doesn't just make great products, we make great products that stand up to the demands of the professionals who use them every day ... Since 1857. Review: Amazing tools for tracing wire or circuit breakers or understanding an outlet’s situation - Was able to fix our perimeter entrance gate and light that had no power. We traced the line to the house and found a hidden switch that was able to be turn them back on. Also when it comes to finding what breaker turns of what outlet or light this excelled where the simpler version fro Klein failed in our homes electrical setup. Now for the Outlet Analyzer it is super simple and works excellent giving you situational awareness. Highly recommend both. Review: A little pricey - Works great and easy to use. Manual is very detailed on how to use the product. ## Features - Product 1: RELIABLE CIRCUIT TRACING of energized or non-energized breakers, fuses, and wires - Product 1: DETECT TRANSMITTED SIGNAL through drywall, cement block, and underground with easy to adjust sensitivity levels - Product 1: TRACE WIRE, CONDUIT OR PVC PIPES or trace a single wire in a bundle for versatility - Product 1: AUDIBLE AND VISUAL INDICATORS on receiver denotes signal strength - Product 2: CLEAR COLOR LCD DISPLAY: Circuit Analyzer with large color LCD provides easy-to-understand results for wiring faults, AFCI, GFCI, voltage drops, and device trip time - Product 2: COMPREHENSIVE WIRING FAULT DETECTION: Detect and identify common wiring faults in standard, AFCI, and GFCI electrical outlets, ensuring thorough evaluation - Product 2: DUAL WIRING FAULT DETECTION: Capable of detecting dual wiring faults, including open neutral and open ground, enhancing safety measures - Product 2: AFCI AND GFCI DEVICE INSPECTION: Inspect AFCI and GFCI devices, measuring trip time and trip current for accurate functionality assessment ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B0CCS6L8DC | | Best Sellers Rank | #381,963 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #486 in Circuit Testers | | Brand | Klein Tools | | Brand Name | Klein Tools | | Color | Orange | | Customer Reviews | 4.6 out of 5 stars 27 Reviews | | Manufacturer | Klein Tools | | Measurement Type | Voltmeter, possibly Ohmmeter | | Model | ET450 | | Specification Met | CE, NIST, RoHS, UL | | Style | Industrial | | Style Name | Industrial | | Unit Count | 1 Count | ## Product Details - **Brand:** Klein Tools - **Color:** Orange - **Measurement Type:** Voltmeter, possibly Ohmmeter - **Power Source:** Battery Powered - **Specification Met:** CE, NIST, RoHS, UL ## Images ![Klein Tools ET450 Advanced Circuit Breaker Finder and Wire Tracer Kit & RT390 Circuit Analyzer with Large LCD, Identifies Wiring Faults, GFCI and AFCI Tester, Voltage Drop, Displays Trip Time, Orange - Image 1](https://m.media-amazon.com/images/I/61pWayFxCIL.jpg) ![Klein Tools ET450 Advanced Circuit Breaker Finder and Wire Tracer Kit & RT390 Circuit Analyzer with Large LCD, Identifies Wiring Faults, GFCI and AFCI Tester, Voltage Drop, Displays Trip Time, Orange - Image 2](https://m.media-amazon.com/images/I/71DaXgIbaFL.jpg) ![Klein Tools ET450 Advanced Circuit Breaker Finder and Wire Tracer Kit & RT390 Circuit Analyzer with Large LCD, Identifies Wiring Faults, GFCI and AFCI Tester, Voltage Drop, Displays Trip Time, Orange - Image 3](https://m.media-amazon.com/images/I/61kzmPpIJAL.jpg) ![Klein Tools ET450 Advanced Circuit Breaker Finder and Wire Tracer Kit & RT390 Circuit Analyzer with Large LCD, Identifies Wiring Faults, GFCI and AFCI Tester, Voltage Drop, Displays Trip Time, Orange - Image 4](https://m.media-amazon.com/images/I/71TQZLt5GmL.jpg) ![Klein Tools ET450 Advanced Circuit Breaker Finder and Wire Tracer Kit & RT390 Circuit Analyzer with Large LCD, Identifies Wiring Faults, GFCI and AFCI Tester, Voltage Drop, Displays Trip Time, Orange - Image 5](https://m.media-amazon.com/images/I/71FxkqNd7pL.jpg) ## Customer Reviews ### ⭐⭐⭐⭐⭐ Amazing tools for tracing wire or circuit breakers or understanding an outlet’s situation *by T***N on March 20, 2024* Was able to fix our perimeter entrance gate and light that had no power. We traced the line to the house and found a hidden switch that was able to be turn them back on. Also when it comes to finding what breaker turns of what outlet or light this excelled where the simpler version fro Klein failed in our homes electrical setup. Now for the Outlet Analyzer it is super simple and works excellent giving you situational awareness. Highly recommend both. ### ⭐⭐⭐⭐⭐ A little pricey *by G***P on August 16, 2024* Works great and easy to use. Manual is very detailed on how to use the product. ### ⭐⭐⭐⭐⭐ Works well *by M***K on May 27, 2024* and helped me fix and find some mysterious wiring I inherited in a new older house. ## Frequently Bought Together - Klein Tools ET450 Advanced Circuit Breaker Finder and Wire Tracer Kit & RT390 Circuit Analyzer with Large LCD, Identifies Wiring Faults, GFCI and AFCI Tester, Voltage Drop, Displays Trip Time, Orange - Klein Tools RT250 GFCI Outlet Tester with LCD Display, Electric Voltage Tester for Standard 3-Wire 120V Electrical Receptacles - Klein Tools 69411 Circuit Breaker Finder Accessory Kit, Circuit Breaker Leads, Circuit Breaker Adapters --- ## 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.sg/products/546512393-klein-tools-et450-advanced-circuit-breaker-finder-and-wire-tracer](https://www.desertcart.sg/products/546512393-klein-tools-et450-advanced-circuit-breaker-finder-and-wire-tracer) --- *Product available on Desertcart Singapore* *Store origin: SG* *Last updated: 2026-09-19*