--- product_id: 297851507 title: "Klein Tools CL440 Clamp Meter, HVAC Meter with TRMS Tests AC/DC Voltage, AC C..." brand: "klein tools" price: "€ 8.82" currency: EUR in_stock: null reviews_count: 4 url: https://www.desertcart.pt/products/297851507-klein-tools-cl440-clamp-meter-hvac-meter-with-trms-tests store_origin: PT region: Portugal --- # 600A AC current max 3x AAA batteries included Temp range -328°F to 2462°F Klein Tools CL440 Clamp Meter, HVAC Meter with TRMS Tests AC/DC Voltage, AC C... **Brand:** klein tools **Price:** € 8.82 **Availability:** ❌ Out of Stock ## Summary > ⚡ Master your HVAC game with precision and power in one clamp! ## Quick Answers - **What is this?** Klein Tools CL440 Clamp Meter, HVAC Meter with TRMS Tests AC/DC Voltage, AC C... by klein tools - **How much does it cost?** € 8.82 with free shipping - **Is it available?** Currently out of stock - **Where can I buy it?** [www.desertcart.pt](https://www.desertcart.pt/products/297851507-klein-tools-cl440-clamp-meter-hvac-meter-with-trms-tests) ## 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 - • **Precision Meets Power:** True RMS tech ensures ultra-accurate AC/DC voltage and current readings every time. - • **Built for the Long Haul:** Crafted by Klein Tools with 160+ years of trusted durability and pro-grade reliability. - • **Dual Display Brilliance:** Backlit LCD shows voltage and current simultaneously—no more toggling or guesswork. - • **All-in-One HVAC Solution:** Measures everything from microamps to inrush current plus temperature with K-Type thermocouple port. - • **Non-Contact Voltage Detection:** Integrated clamp jaw voltage tester keeps you safe and efficient on the job. ## Overview The Klein Tools CL440 Clamp Meter is a professional-grade HVAC meter featuring true RMS technology for precise AC/DC voltage and current measurements up to 600A. It includes a K-Type thermocouple port for temperature readings from -328°F to 2462°F, non-contact voltage detection integrated into the clamp jaw, and a backlit dual display for simultaneous voltage and current viewing. Powered by 3 AAA batteries and built with Klein’s 160+ years of craftsmanship, this tool is engineered for durability and accuracy in demanding professional environments. ## Description Klein Tools CL440 Clamp Meter is an advanced HVAC clamp meter with automatically ranging true root mean square (TRMS) for maximum accuracy. The meter measures AC current, inrush current, AC/DC voltage, DC microamps, resistance, continuity, frequency, capacitance, temperature, diodes, and more. This Digital Clamp Meter comes with right-angle input test leads, push-on alligator clips, K-Type thermocouple, storage pouch, instructional manual, and 3 x AAA batteries. 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. ## Features - AUTOMATICALLY RANGING true root mean square (TRMS) digital clamp meter for HVAC applications - MEASURES 600.0 A AC current and inrush current - MEASURES 750V AC/600V DC voltage, DC micro amp, resistance, continuity, frequency, duty-cycle, capacitance, and diode tests - K-TYPE thermocouple port for measuring temperature from -328 to 2462 Degrees Fahrenheit (-200 to 1400 Degrees Celsius) - DETECT AC CURRENT with non-contact voltage tester integrated into the clamp jaw - BACKLIT LCD with dual V + A function allows simultaneous viewing of voltage and current measurements - DEDICATED MODE for capturing DC micro amp and inrush current ## Technical Specifications | Specification | Value | |---------------|-------| | Brand | KLEIN TOOLS | | Power Source | Battery Powered | | Style | 2-Inch Jaw | | Item Weight | 0.89 Pounds | | Item dimensions L x W x H | 10.44 x 3.77 x 1.57 inches | | Specification Met | Iec 61010-1, En 61010-1 | | Upper Temperature Rating | 2462 Degrees Fahrenheit | | Measurement Type | Ammeter | | UPC | 092644693359 | | Manufacturer | Klein Tools | | Global Trade Identification Number | 00092644693359 | | Part Number | CL440 | | Item Weight | 14.2 ounces | | Product Dimensions | 10.44 x 3.77 x 1.57 inches | | Item model number | CL440 | | Batteries | 3 AAA batteries required. (included) | | Is Discontinued By Manufacturer | No | | Size | 2-Inch Jaw | | Pattern | Meter | | Item Package Quantity | 1 | | Included Components | Right-angle Input Test Leads | | Batteries Included? | Yes | | Batteries Required? | Yes | | Battery Cell Type | Alkaline | | Warranty Description | Please refer to attached warranty document for information | ## Product Details - **Brand:** KLEIN TOOLS - **Power Source:** Battery Powered - **Style:** 2-Inch Jaw - **Item Weight:** 0.89 Pounds - **Item dimensions L x W x H:** 10.44 x 3.77 x 1.57 inches ## Images ![Klein Tools CL440 Clamp Meter, HVAC Meter with TRMS Tests AC/DC Voltage, AC C... - Image 1](https://m.media-amazon.com/images/I/51igyVHoKaL.jpg) ![Klein Tools CL440 Clamp Meter, HVAC Meter with TRMS Tests AC/DC Voltage, AC C... - Image 2](https://m.media-amazon.com/images/I/615HPbDaEkL.jpg) ![Klein Tools CL440 Clamp Meter, HVAC Meter with TRMS Tests AC/DC Voltage, AC C... - Image 3](https://m.media-amazon.com/images/I/614uEdS+C-L.jpg) ![Klein Tools CL440 Clamp Meter, HVAC Meter with TRMS Tests AC/DC Voltage, AC C... - Image 4](https://m.media-amazon.com/images/I/61HypG0KYlL.jpg) ![Klein Tools CL440 Clamp Meter, HVAC Meter with TRMS Tests AC/DC Voltage, AC C... - Image 5](https://m.media-amazon.com/images/I/71kbo85H+nL.jpg) ## Available Options This product comes in different **Pattern Name, Style** options. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Tjis Klein meter is one of the best I've used *by B***R on Reviewed in the United States on November 2, 2021* As an HVAC guy who also does a lot of electrical work, I feel like I've used every meter known to man and know the good from the bad. As far as I'm concerned Klein makes only two really good meters the CL450 and the CL440. With only a couple features separating them, they both have all the features a technician could ever need. They are fast, and can read in the tenths of an amp thru the clamp for low amperage motors etc. The beeper is actually loud enough to hear by older guys who've been too long in noisy environs, which a lot od meters can't boast about. The backlight stays on til you shut it off, which is how it should be. If left on the meters auto power off feature will take care of it. It has a Cat IV rating which is also comforting. It does I rush, capacitance and micro amps DC which is what most techs need on top of the normal stuff that most meters have. This is only a small list of all the things this meter can do, and it does everything well. If I had to list a negative it would be it's large size, but it's no larger than most other meters, being roughly the size of Amprobe NAV series which is not all that large but much smaller than the Fieldpiece 6XX series which are monstrous.You won't be unhappy with this meter and it's all you'll need to carry. ### ⭐⭐⭐⭐⭐ Great meter for the price *by J***F on Reviewed in the United States on December 17, 2021* no issues with a lot of functions for the money. A little bigger then I thought but works well ### ⭐⭐⭐⭐⭐ Best could find for price and functionality HVAC *by M***S on Reviewed in the United States on August 26, 2021* Will update if any problems found in accuracy. So far happy choosing the CL440. Have two fluke meters 83 and 117. Needed HVAC testing abilities. Only first look is leads fall out too easy. Squeezing bit and trying again helped. --- ## 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/297851507-klein-tools-cl440-clamp-meter-hvac-meter-with-trms-tests](https://www.desertcart.pt/products/297851507-klein-tools-cl440-clamp-meter-hvac-meter-with-trms-tests) --- *Product available on Desertcart Portugal* *Store origin: PT* *Last updated: 2026-04-23*