--- product_id: 302689571 title: "Digital Multimeter Tester UT139C, Voltage Meter Tester Capacitance Meter Frequency TRMS 6000 Counts Auto/Manual Ranging" brand: "uni-t" price: "429 zł" currency: PLN in_stock: true reviews_count: 13 category: "Uni T" url: https://www.desertcart.pl/products/302689571-digital-multimeter-tester-ut139c-voltage-meter-tester-capacitance-meter-frequency store_origin: PL region: Poland --- # 600 V max AC/DC voltage 6,000 counts True RMS precision 10 A max AC/DC current Digital Multimeter Tester UT139C, Voltage Meter Tester Capacitance Meter Frequency TRMS 6000 Counts Auto/Manual Ranging **Brand:** uni-t **Price:** 429 zł **Availability:** ✅ In Stock ## Summary > 🔧 Empower your electrical expertise with precision and safety in one sleek device! ## Quick Answers - **What is this?** Digital Multimeter Tester UT139C, Voltage Meter Tester Capacitance Meter Frequency TRMS 6000 Counts Auto/Manual Ranging by uni-t - **How much does it cost?** 429 zł with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.pl](https://www.desertcart.pl/products/302689571-digital-multimeter-tester-ut139c-voltage-meter-tester-capacitance-meter-frequency) ## Best For - uni-t enthusiasts ## Why This Product - Trusted uni-t brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Safety First:** CAT III 600 V rating and NCV detection keep you protected while you work confidently. - • **Built to Last:** Rugged rubberized casing and full-range protection mean this multimeter is ready for the job site or your workshop. - • **User-Friendly Design:** Auto/manual ranging, backlit LCD, and data hold make testing effortless in any environment. - • **Precision Meets Power:** True RMS accuracy for complex waveforms ensures your measurements are always spot-on. - • **Versatile Diagnostics:** From capacitance to temperature and frequency, tackle any electrical challenge with one tool. ## Overview The UNI-T UT139C is a professional-grade True RMS digital multimeter offering 6,000 counts resolution, capable of measuring AC/DC voltage up to 600 V, current up to 10 A, resistance, capacitance, frequency, temperature, and more. Featuring auto/manual ranging, NCV detection, and a durable rubberized housing with CAT III 600 V safety rating, it’s designed for electricians, engineers, and hobbyists who demand accuracy, versatility, and reliability in troubleshooting electrical systems. ## Description UNI-T Digital Multimeter Tester UT139C, Voltage Meter Tester Capacitance Meter Frequency TRMS 6000 Counts Auto/Manual Ranging: desertcart.com: Tools & Home Improvement Review: Good Value for the Money - This is a somewhat specialized DVM (Digital Volt Meter) in that it measures AC Voltages and Currents using a true RMS circuit and has a transistor test function. True RMS matters for distorted waveforms such as with iron core transformer currents and in audio signals - Which would only apply to an electronic technician or engineer. An electrician would not need the true RMS feature. And of course only an electronic technician or engineer would be measuring transistor gain (Hfe or Beta). This is a pretty good value if you are an electronic technician, engineer, or hobbyist. A name brand like Fluke would cost much more for the same functionality and specifications. You can check out the spec sheet online. Here are some additional measurement notes based on my instrument not mentioned in the specifications: Measuring a silicon diode in the diode function, the measurement current is about 0.90 mA. Measuring continuity in the continuity function, the measurement into a short is about 0.25 mA. Measuring an LED in the LED function, the measurement current is around 4 mA - which is enough to see the actual LED under test light up. Measuring the Beta of an NPN transistor, the base measurement current is around 5 uA (Beta = Ic/Ib). Measuring a resistance, on the lowest scale the measuring current into a short is about 0.25 mA. The backlight operation of the display is a little odd at first. When you turn on the meter it is in backlight mode but it won't come on except in the dark or if you put your hand temporarily over the display to darken the built in light sensor - Then the backlight stays on until you turn it off either by shutting off the meter or using the backlight off button. At first I thought my backlight was defective until I discovered how to make it turn on. I would have preferred the backlight button just turn on or off the backlight without the ambient light sensor in the meter. The light built into the back of the meter that turns on by holding a button is a pretty nice idea if you are working in dark. The "delta" function is useful when measuring low resistances to account for test lead resistance or measuring low capacitance in the 10's of pF. Being able to measure AC or DC Voltages up to 1000 V is useful if you work with higher power vacuum tube equipment. The only negatives apparent to me are: (1) The meter took 16 days to get from China to my home in the USA, but it was within the promised delivery date. (2) The instructions recommend against measuring full scale currents for more than a minute - That is odd to me. Either the current sensing resistor isn't rated for continuous power at 20 Amps or it heats up and makes the measurement inaccurate. That was not a measurement I was planning on, but it's decidedly "odd". All in all, the meter seems to be well made and generally well designed. The probes seem to be of good quality. If you need the functions this meter has and are on a modest budget, then this is a good choice. To be honest, if I were only going to use it as a general electrician might for a job, I'd spend the extra money on a Fluke because of their reliability and ruggedness. But as a hobbyist mostly working on home electronics, this is a very good value. Review: Happy with quality and performance. - Tested accurate as can be for the price. Solid build quality and good reviews online. Haven’t used the BT feature yet. Couldn’t find a case that I didn’t want to risk not fitting and having to return on desertcart so ordered from that “express” site. Unit came with everything needed to get started. Worth the price for the hobbyist or other mid-level usages. ## Features - UNIT True RMS Digital Multimeter Kit UT139C. 6,000 counts. Measures AC DC voltage (600 V max), AC DC current (10 A max), resistance, capacitor tester, frequency, temperature, diode test, bandwidth, etc - Auto/manual ranges switchable multi meter digital. Relative mode. MAX/MIN. Data hold. LCD backlight. Auto power off - Safe & Durable ohm meter multimeter. Safety rating: CAT III 600 V. NCV detection feature effectively checks electrical status through measuring EM field intensity. Full range protection (600 V) - Troubleshoot home appliances, light fixtures, sockets and electrical panels. Besides, great volt meter and multimeter for checking automotive battery voltage, alternator output, etc - Thick rubberized cover and quality built-to-last electrical kit. Ideal for electricians. Diagnose automotive, industrial and household electrical issue in a breeze ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B08V4RTJ8N | | Best Sellers Rank | #253,234 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #423 in Multi Testers | | Brand | UNI-T | | Color | Black | | Date First Available | January 27, 2021 | | Is Discontinued By Manufacturer | No | | Item Weight | 1 pounds | | Item model number | UT139C | | Manufacturer | UNI-T | | Measurement Type | Multimeter | | Package Dimensions | 8.74 x 6.34 x 2.32 inches | | Power Source | Battery Powered | | Style | Digital | | UPC | 767461830521 | | Upper Temperature Rating | 60 Degrees Celsius | ## Product Details - **Brand:** UNI-T - **Color:** Black - **Item Weight:** 1 Pounds - **Power Source:** Battery Powered - **Style:** Digital ## Images ![Digital Multimeter Tester UT139C, Voltage Meter Tester Capacitance Meter Frequency TRMS 6000 Counts Auto/Manual Ranging - Image 1](https://m.media-amazon.com/images/I/71RkRQceBUL.jpg) ## Available Options This product comes in different **Size** options. ## Questions & Answers **Q: I'm finding conflicting information. does the ut139e have a black ebtn display like the ut139s?** A: Hi, the UT139e has a regular display, black numerals over a light background. The UT139s has the black EBTN display. I have the “e” model and it’s fine, but I can see how the reverse contrast background might be more legible under certain lighting conditions. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Good Value for the Money *by C***. on March 22, 2024* This is a somewhat specialized DVM (Digital Volt Meter) in that it measures AC Voltages and Currents using a true RMS circuit and has a transistor test function. True RMS matters for distorted waveforms such as with iron core transformer currents and in audio signals - Which would only apply to an electronic technician or engineer. An electrician would not need the true RMS feature. And of course only an electronic technician or engineer would be measuring transistor gain (Hfe or Beta). This is a pretty good value if you are an electronic technician, engineer, or hobbyist. A name brand like Fluke would cost much more for the same functionality and specifications. You can check out the spec sheet online. Here are some additional measurement notes based on my instrument not mentioned in the specifications: Measuring a silicon diode in the diode function, the measurement current is about 0.90 mA. Measuring continuity in the continuity function, the measurement into a short is about 0.25 mA. Measuring an LED in the LED function, the measurement current is around 4 mA - which is enough to see the actual LED under test light up. Measuring the Beta of an NPN transistor, the base measurement current is around 5 uA (Beta = Ic/Ib). Measuring a resistance, on the lowest scale the measuring current into a short is about 0.25 mA. The backlight operation of the display is a little odd at first. When you turn on the meter it is in backlight mode but it won't come on except in the dark or if you put your hand temporarily over the display to darken the built in light sensor - Then the backlight stays on until you turn it off either by shutting off the meter or using the backlight off button. At first I thought my backlight was defective until I discovered how to make it turn on. I would have preferred the backlight button just turn on or off the backlight without the ambient light sensor in the meter. The light built into the back of the meter that turns on by holding a button is a pretty nice idea if you are working in dark. The "delta" function is useful when measuring low resistances to account for test lead resistance or measuring low capacitance in the 10's of pF. Being able to measure AC or DC Voltages up to 1000 V is useful if you work with higher power vacuum tube equipment. The only negatives apparent to me are: (1) The meter took 16 days to get from China to my home in the USA, but it was within the promised delivery date. (2) The instructions recommend against measuring full scale currents for more than a minute - That is odd to me. Either the current sensing resistor isn't rated for continuous power at 20 Amps or it heats up and makes the measurement inaccurate. That was not a measurement I was planning on, but it's decidedly "odd". All in all, the meter seems to be well made and generally well designed. The probes seem to be of good quality. If you need the functions this meter has and are on a modest budget, then this is a good choice. To be honest, if I were only going to use it as a general electrician might for a job, I'd spend the extra money on a Fluke because of their reliability and ruggedness. But as a hobbyist mostly working on home electronics, this is a very good value. ### ⭐⭐⭐⭐⭐ Happy with quality and performance. *by J***J on February 2, 2025* Tested accurate as can be for the price. Solid build quality and good reviews online. Haven’t used the BT feature yet. Couldn’t find a case that I didn’t want to risk not fitting and having to return on Amazon so ordered from that “express” site. Unit came with everything needed to get started. Worth the price for the hobbyist or other mid-level usages. ### ⭐⭐⭐⭐ It works well for my purposes. *by J***. on December 31, 2025* Good overall meter for occasional use. Sometimes in sunlight, the display will wash out, but so do most digital meters. Easy to use if you have ever used a VOM. Several features on the meter are yet to be explored. I purchased the meter to troubleshoot the CAN Hi network on my Volvo. The meter met the challenge. ## Frequently Bought Together - UNI-T Digital Multimeter Tester UT139C, Voltage Meter Tester Capacitance Meter Frequency TRMS 6000 Counts Auto/Manual Ranging - PINECIL – Smart Mini Portable Soldering Iron, Small - SRA Solder 135 Rosin Paste Soldering Flux For Electronics, No Clean Flux Made for Lead and Lead-Free Solder Circuit Boards and Copper Electrical Wire - Safe Clean Residues with No Goopy Mess (2oz Jar) --- ## 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.pl/products/302689571-digital-multimeter-tester-ut139c-voltage-meter-tester-capacitance-meter-frequency](https://www.desertcart.pl/products/302689571-digital-multimeter-tester-ut139c-voltage-meter-tester-capacitance-meter-frequency) --- *Product available on Desertcart Poland* *Store origin: PL* *Last updated: 2026-04-22*