--- product_id: 22506626 title: "Digital Multimeter DC 8-100V 20A Voltage Amperage Power Energy Meter, DC Volt Amp Tester Gauge Monitor LCD Digital Display with Built-in Shunt" brand: "drok" price: "$35.43" currency: USD in_stock: true reviews_count: 13 url: https://www.desertcart.us/products/22506626-digital-multimeter-dc-8-100v-20a-voltage-amperage-power-energy store_origin: US region: United States of America --- # Current up to 20A Power monitoring up to 2kW Measures Voltage 8-100V DC Digital Multimeter DC 8-100V 20A Voltage Amperage Power Energy Meter, DC Volt Amp Tester Gauge Monitor LCD Digital Display with Built-in Shunt **Brand:** drok **Price:** $35.43 **Availability:** ✅ In Stock ## Summary > ⚡ Power up your projects with precision and style! ## Quick Answers - **What is this?** Digital Multimeter DC 8-100V 20A Voltage Amperage Power Energy Meter, DC Volt Amp Tester Gauge Monitor LCD Digital Display with Built-in Shunt by drok - **How much does it cost?** $35.43 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.us](https://www.desertcart.us/products/22506626-digital-multimeter-dc-8-100v-20a-voltage-amperage-power-energy) ## Best For - drok enthusiasts ## Why This Product - Trusted drok brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Smart Voltage Alarm:** Over-voltage triggers flashing backlight & alert—never miss a critical spike - • **Effortless Installation:** Built-in shunt and clear 4-point terminal strip with wiring diagram for quick setup - • **Data Persistence & Reset:** Stores data after power off and lets you reset accumulated energy with a button - • **Precision Meets Portability:** Compact design with 1.0 grade accuracy for reliable readings anywhere indoors - • **Simultaneous Multi-Parameter Display:** Voltage, current, power & energy all visible at once on a crisp LCD ## Overview The DROK Digital Multimeter is a compact, battery-powered DC volt-amp tester designed for indoor use, capable of measuring voltage (8-100V), current (0-20A), power (up to 2kW), and energy (up to 9999kWh) simultaneously on a large LCD. Featuring a built-in shunt for easy wiring, a smart over-voltage alarm with backlight flash, and data retention after power off, it’s a must-have tool for professionals and enthusiasts seeking accurate, real-time electrical monitoring. ## Description Parameters: Working Voltage: 6.5~100VDC; Measuring Range: 6.5~100VDC; Rated Power: 20A/2000W; Measuring Accuracy: 1.0 grade. Test range and display format: Power Range: 0~2kW within 1kW, display 0.0~999.9W; above 1kW, display 1000~2000W. Energy Range: 0~9999kWh within 10KWh, display 0~9999Wh; above 10kWh, display 10~9999kWh. Voltage Range: 6.5~100V(display 6.50~99.99V), Current Range: 0~20A(display 0.00~20.00A). Note: This module is suitable for indoor, please do not use outdoor. Applied load should not exceed the rated voltage or current. Wiring order can't be wrong. Package Includes: 1x DC Power Multimeter. ## Features - The portable multi-meter has a Large-screen LCD, can display voltage, current, power, energy at the same time, bright and easy to read. - Voltage test range: DC 8~100V; Current test range: 0~20A; Power test range: 0~2KW; Energy test range: 0~9999kWh. - Multifunctional: the accumulated energy can be reset by button; Store data when power off; Voltage alarm function (over voltage alarm threshold, backlight and voltage will flash to alarm). - Easy to hook up: with built-in shunt, 2 wires in (DC + and -) and 2 wires out (The Load), all connections are via a 4 point terminal strip(has a wiring diagram on its back). - The blue backlight can be turned on/off by the front accessible recessed switch located on the right side bezel. ## Technical Specifications | Specification | Value | |---------------|-------| | Asin | B017FSED9I | | Best Sellers Rank | #130,928 in Tools & Home Improvement (See Top 100 in Tools & Home Improvement) #184 in Multi Testers | | Brand Name | DROK | | Color | Blue | | Compatible Devices | Electrical components and circuits | | Customer Reviews | 4.5 4.5 out of 5 stars (521) 4.5 out of 5 stars | | Included Components | no | | Item Dimensions | 3.53 x 1.95 x 0.96 inches | | Item Weight | 9.07 g | | Manufacturer | DROK | | Measurement Type | Multimeter | | Minimum Operating Voltage | 8 | | Model | 200139US | | Number Of Items | 1 | | Part Number | 200139US | | Power Source | Battery Powered | | Style Name | 20A | | Unit Count | 1 Count | ## Product Details - **Brand:** DROK - **Color:** Blue - **Item Weight:** 9.07 g - **Power Source:** Battery Powered - **Style:** 20A ## Images ![Digital Multimeter DC 8-100V 20A Voltage Amperage Power Energy Meter, DC Volt Amp Tester Gauge Monitor LCD Digital Display with Built-in Shunt - Image 1](https://m.media-amazon.com/images/I/61Ez76GD8lL.jpg) ## Available Options This product comes in different **Size, Style** options. ## Questions & Answers **Q: Can the voltage be calibrated? Mine was accurate initially but now displays ~19v with a 12v line supply. The load side reads 12v with a multimeter.** A: Same thing happened after 2 months to mine!!! I was wondering what happened. My solar panels produce about 36 volts, now it's displaying 50-60, throwing the wattage reading way off. If anyone knows how to calibrate it, let us know please. **Q: How do you hook up this gauge with its tiny wires/connections when all of the cabling in a solar system is much heavier gauge? seems like a botleneck!** A: All of the current ( AMPS) go through the SHUNT ( rated at 20 AMPS ) the small wires that go to the display unit from the SHUNT are only supplying very low current / low voltage to the display unit that gives it the value of the current ( AMPS ) that are passing through the SHUNT. I have the 100 AMP SHUNT version of this unit and it works very well. Again, all the current and the voltage your measuring with this unit are derived at the SHUNT and it can handle a lot of current and will NOT restrict or bottleneck the current or the voltage you want to measure. Hope this helps. **Q: What is "dc in" in the diagram on the back of the device? is it battery?** A: This is the dc from the source that you want to monitor. It could be from a battery, power supply, solar cell, generator, etc. **Q: The button for backlight looks recessed. Do you need something like a pen to push the button?** A: Yes! And it is also used to set several parameters which is OK if your use is in a PERMANENT setup. In my case it is only a test meter, and it becomes a pain to just reset the Watt.Hr meter... Also everytime it is powered up the backlight comes up flashing... Neat instrument otherwise.. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Works very well and is mountable *by on Reviewed in the United States October 5, 2026* This device works perfectly on my test bench to replace the need for pulling out my hand-held multimeter. The wiring is very straightforward and outlined well on the back cover. There is also enough blank space inside to safely attach small brackets to the body for mounting as seen in my pic. My other pic shows the device properly reflecting the milliamp draw of an auto accessory that was previously tested with matching results. ### ⭐⭐⭐⭐⭐ Drok Meter Hookup *by on Reviewed in the United States January 21, 2024* I have numerous Drok power products and they are reliable and well designed. At this point I add their name to a search and hope they supply what I need. I added this meter to my Renogy solar controller to measure load. The backlight is very sharp and the readings accurate. I don't think you can go wrong with it.Get a PDF of the manual while you wait for it to arrive.How you can go wrong HiHi. If you connect from solar panel to charge controller, this and other meters may not start up properly. This may be due to very low current at start up and ramping up the voltage.You may need some circuitry to work around this problem. Try connecting the plus lead on the meter to battery rather than the solar panel positive output. ### ⭐⭐⭐⭐ Great item -- will probably buy more *by on Reviewed in the United States April 22, 2016* UPDATE:After about a month of solar panel monitoring I decided to upgrade my wiring setup to monitor the output side of my charge controller instead of the line from the solar panel. When I went to remove this from the circuit, I was surprised to see the accumulated energy field read 238 Wh when it last read 1058 Wh. It should have stayed in 4 digit Wh range or at most switched to kWh readings. There's no way my 15w panel could have generated the 9,998-odd kWh necessary to roll the display.Mine also isn't showing the right voltage anymore. A 12V DC supply applied to the line side reads about 19V yet the output side reads 12V with a multimeter. When new, the display was very accurate.I still like this meter, but obviously something is wrong with mine.This is a pretty slick tool -- my review is probably closer to 4.5 stars, excellent but not quite perfect. The screen is very easy to read even in outside daylight and it draws very little power -- my 15w solar panel will light this up with a no-load indicated voltage of 13w under fluorescent lighting. For me the killer feature is the energy (watt hours) figure and the fact that it has memory and will retain this value even when it loses power, which is important for my use of monitoring the net energy production of my solar panels.My only complaints are pretty small -- the wiring terminals are kind of tiny, and while they accept the 16ga wiring my 15w panel uses the little flat head screws are tough to screw down securely. A molex type socket would be a lot more secure. The only other thing I wish was a "factory" option is a pre-fit project box for this. I bought one that's a pretty good fit, but had to do my own cutout in the lid and tap and seal my line and load holes.I plan to use this between a solar panel and a charge controller to determine how much charging my panel actually accomplishes. It's a 15W nominal panel and in theory even at a daily average of 5W I figure I should be getting around 50Wh worst case out of it. For a panel that sits out in direct sun, I *should* be adding 250Wh or 20Ah to my 12v battery for the 5 days it sits unused yet last summer the battery stopped holding a charge completely. This monitor will clear up whether the battery just gets overused or whether the panel isn't supplying meaningful power. I notice this vendor also sells battery monitors and I may add one of those plus another one of these on the load side of my battery to figure out what my power drain is; I may just be using more power than my alternator plus solar panel can put back in.If the vendor ever gets into more complex products, this would be an awesome thing to add networking to for remote monitoring. ## Frequently Bought Together - DROK Digital Multimeter DC 6.5-100V 20A Voltage Amperage Power Energy Meter, DC Volt Amp Tester Gauge Monitor LCD Digital Display with Built-in Shunt - AC Current Voltage Amperage Power Energy Panel Meter LCD Digital Display Ammeter Voltmeter Multimeter with Split Core Current Transformer CT AC 80-260V 100A Multi-Function Power Monitor - DROK DC 4.5-100V Digital Voltmeter Ammeter Multimeter Panel, DC Amp Meter Voltage Meter, Current Meter 0-50A Volt Tester, LED Display Voltage Gauge for Automotive Motor Battery --- ## 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.us/products/22506626-digital-multimeter-dc-8-100v-20a-voltage-amperage-power-energy](https://www.desertcart.us/products/22506626-digital-multimeter-dc-8-100v-20a-voltage-amperage-power-energy) --- *Product available on Desertcart United States of America* *Store origin: US* *Last updated: 2026-10-18*