--- product_id: 127765877 title: "Klein Tools ET45 Digital AC/DC Voltage Tester, 12-240V AC, 32-330V DC, LED Illumination, DC Polarity, Auto Off, CATIII 350V-Class 2-Double Insulation, IP44 Dust & Water Resistant, No Batteries Needed" brand: "klein tools" price: "€ 22.81" currency: EUR in_stock: true reviews_count: 13 category: "Klein Tools" url: https://www.desertcart.pt/products/127765877-klein-tools-et45-digital-ac-dc-voltage-tester-12-240v store_origin: PT region: Portugal --- # 12-240V AC & 32-330V DC range Bright LED voltage indication CATIII 350V safety & IP44 protection Klein Tools ET45 Digital AC/DC Voltage Tester, 12-240V AC, 32-330V DC, LED Illumination, DC Polarity, Auto Off, CATIII 350V-Class 2-Double Insulation, IP44 Dust & Water Resistant, No Batteries Needed **Brand:** klein tools **Price:** € 22.81 **Availability:** ✅ In Stock ## Summary > ⚡ Test Smarter, Work Safer — Klein Tools ET45 Has Your Voltage Covered! ## Quick Answers - **What is this?** Klein Tools ET45 Digital AC/DC Voltage Tester, 12-240V AC, 32-330V DC, LED Illumination, DC Polarity, Auto Off, CATIII 350V-Class 2-Double Insulation, IP44 Dust & Water Resistant, No Batteries Needed by klein tools - **How much does it cost?** € 22.81 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.pt](https://www.desertcart.pt/products/127765877-klein-tools-et45-digital-ac-dc-voltage-tester-12-240v) ## 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 - • **Compact Convenience:** Integrated test lead holders and pocket clip make portability effortless and professional. - • **Safety First, Always:** CATIII 350V rating with double insulation keeps you protected in high-risk environments. - • **Built for the Jobsite:** Rugged IP44 dust & water resistance plus 3m drop protection for ultimate durability. - • **Power Up Without Batteries:** Voltage-powered design means zero downtime—always ready when you are. - • **Precision Voltage Detection:** Clear LED illumination ensures you never second-guess your readings on the job. ## Overview The Klein Tools ET45 Digital Voltage Tester offers professional-grade AC/DC voltage testing from 12-240V AC and 32-330V DC with bright LED indicators for clear readings. Battery-free operation powered directly by voltage ensures uninterrupted use, while its rugged IP44 rating and CATIII 350V safety certification provide reliable protection on any jobsite. Compact and durable, it’s engineered for precision, convenience, and safety in electrical troubleshooting and inspections. ## Description Klein Tools ET45 is an Electronic Voltage Tester. Designed as a simple, easy to use tester to check, verify or troubleshoot common residential electrical wiring in electrical outlets, light fixtures, doorbells and more. This tester does not require batteries, and features a pocket clip for convenient carrying. 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: A nice alternative to multimeter - Sometimes you don't want to bring out the multimeter just to test the voltage. This is a good alternative. Review: Works great - great quality ## Features - EXTENSIVE VOLTAGE TESTING: Test AC voltages from 24V to 240V and DC voltages from 32V to 330V across four levels, providing comprehensive electrical testing capabilities - CLEAR VOLTAGE INDICATION: Bright LEDs illuminate, providing clear indication of voltage type and level, ensuring accurate measurements every time - BUILT-IN TEST LEAD HOLDERS: Conveniently built-in test lead holders on the back of the meter spaced for testing tamper-resistant US-style outlets and easy storage - BATTERY-FREE OPERATION: Powered directly by the applied voltage, eliminating the need for batteries and ensuring continuous testing without interruption - ENHANCED DURABILITY: IP44 ingress protection and 9.8-Foot (3m) drop protection to meet jobsite demands - HIGH SAFETY STANDARDS: Safety Rating of CATIII 350V, Class 2, Double insulation ensures optimal protection and compliance with safety regulations - VERSATILE APPLICATION: Suitable for a wide range of electrical testing scenarios, this tester provides accurate results and peace of mind during electrical inspections and troubleshooting ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B07NZS6DGS | | Best Sellers Rank | #34,591 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #31 in Voltage Testers | | Brand Name | KLEIN TOOLS | | Color | Orange | | Customer Reviews | 4.5 4.5 out of 5 stars (1,670) | | Global Trade Identification Number | 00092644691843 | | Included Components | Tester | | Item Dimensions | 4.45 x 1.19 x 1.05 inches | | Item Type Name | Klein Tools ET45 Voltage Tester, AC Voltage and DC Voltage Tester, Low Voltage Tester Does Not Need Batteries | | Item Weight | 1.8 Ounces | | Manufacturer | Klein Tools | | Measurement Type | Voltmeter | | Minimum Operating Voltage | 24 Volts (AC) | | Model | ET40 | | Power Source | Voltage-powered | | Specification Met | CE | | Style Name | 24/240 V | | UPC | 092644691843 | | Unit Count | 1.0 Count | | Warranty Description | 1 year manufacturer | ## Product Details - **Brand:** KLEIN TOOLS - **Color:** Orange - **Item Weight:** 1.8 Ounces - **Power Source:** Voltage-powered - **Style:** 24/240 V ## Images ![Klein Tools ET45 Digital AC/DC Voltage Tester, 12-240V AC, 32-330V DC, LED Illumination, DC Polarity, Auto Off, CATIII 350V-Class 2-Double Insulation, IP44 Dust & Water Resistant, No Batteries Needed - Image 1](https://m.media-amazon.com/images/I/41scTu1+HhL.jpg) ## Available Options This product comes in different **Style** options. ## Customer Reviews ### ⭐⭐⭐⭐⭐ A nice alternative to multimeter *by L***G on February 24, 2026* Sometimes you don't want to bring out the multimeter just to test the voltage. This is a good alternative. ### ⭐⭐⭐⭐⭐ Works great *by B***N on February 5, 2026* great quality ### ⭐⭐⭐⭐⭐ Highly practical for both professionals and DIYers — I would definitely buy it again! ⚡🛠️ *by S***Y on March 15, 2026* ⭐️⭐️⭐️⭐️⭐️ The Klein Tools ET45 Digital AC/DC Voltage Tester is accurate, easy to use, and excellent value for money. It provides reliable readings every time, and the design is straightforward and user-friendly. Highly practical for both professionals and DIYers — I would definitely buy it again! ⚡🛠️ ## Frequently Bought Together - Klein Tools ET45 Voltage Tester, AC / DC, and Low Voltage Electric Tester, No Batteries Needed - NSi Industries TES-2 Voltage Tester, 120 or 240 VAC, Neon - WGGE WG-015 Professional 8-inch Wire Stripper/wire crimping tool, Wire Cutter, Wire Crimper, Cable Stripper, Wiring Tools and Multi-Function Hand Tool. --- ## 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.pt/products/127765877-klein-tools-et45-digital-ac-dc-voltage-tester-12-240v](https://www.desertcart.pt/products/127765877-klein-tools-et45-digital-ac-dc-voltage-tester-12-240v) --- *Product available on Desertcart Portugal* *Store origin: PT* *Last updated: 2026-04-23*