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🔌 Power up your testing game with Klein’s ET910 — the ultimate USB-A meter for pros who demand precision!
The Klein Tools ET910 is a USB-A digital power meter and tester designed for professionals needing precise voltage, current, capacity, energy, and resistance measurements. It supports Qualcomm Quick Charge ports, features built-in test loads up to 3A, stores up to 10 readings, and operates without batteries by drawing power directly from the USB source. Its high-resolution LCD ensures clear data visibility, making it an essential tool for reliable USB port diagnostics and load testing.










| ASIN | B07GXSRCWM |
| Best Sellers Rank | #57,404 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #471 in Multi Testers |
| Brand | KLEIN TOOLS |
| Brand Name | KLEIN TOOLS |
| Color | Clear |
| Colour | Clear |
| Compatible Devices | USB-A devices |
| Customer Reviews | 4.6 out of 5 stars 129 Reviews |
| Global Trade Identification Number | 00092644691393 |
| Included Components | Tools & Accessories |
| Item Dimensions | 28.5 x 5.4 x 2.5 centimeters |
| Item Length | 4.31 Inches |
| Item Type Name | Klein Tools USB Digital Meter and Tester, USB-A (Type A) ET910 |
| Item Weight | 2.8 Ounces |
| Item Width | 2.15 Inches |
| Item dimensions L x W x H | 28.5 x 5.4 x 2.5 centimeters |
| Item weight | 2.8 Ounces |
| Manufacturer | KLEIN TOOLS |
| Maximum Operating Voltage | 20 Volts |
| Measurement Type | Power Meter |
| Minimum Operating Voltage | 3 Volts (DC) |
| Model | ET910 |
| Number of Items | 1 |
| Part Number | ET910 |
| Power Source | Usb-powered |
| Power source | Usb-powered |
| Specification Met | UL 61010-1, IEC 61010-2-030 |
| Style | USB-A Tester and Meter |
| Style Name | USB-A Tester and Meter |
| UPC | 092644691393 |
| Warranty Description | 1 year manufacturer |
S**Y
Good pass / fail tester.
I bought this for testing USB ports in campers while working as an RV Technician. 910 Beside the data display screen there is the test screen which has 4 load levels to choose from. I have had a charge port ‘fail’, and it dimmed the bedroom lights too which indicated a problem. Very rare, but you don’t want to sell an $80k 5th wheel hauler that has a plug that won’t charge your phone! I’ve only played around with the pass thru feature so far, bought it for testing USB ports, which it does great. This isn’t for everyone, definitely a techie gadget. I only wish it had its own power so that I didn’t have to wait for it to ‘boot’ before testing. Some RVs have several ports throughout. I would buy again but I shouldn’t ever have to. It’s of good Klein quality. I like it.
M**T
Excellent
Great Klein product. Test feature is a huge plus. I Bought it to test loads on my usb/ plug and usb power supplies laying around . Does everything it advertises, easy to use
S**N
Convenient way to test USB chargers!
I bought this tool (ET910) to help a client check that the USB input source his board is drawing, is capable of providing 5V 3A under stress conditions. In less than a minute, I simulated currents of 0.5A, 1A, 2A and 3A, and demonstrated that the input source isn't capable of providing 2A or more (plus that the voltage will drop to 3V and provoke other failures). Such convenience! We quickly tested the other USB chargers he has and identified which ones he should use instead. Well worth the money!
A**O
Muy buen multimetro de usb.
Me gustó buena calidad, esperaba algo asà de buen material por que lo de los chinos no duran.
Y**S
Mal producto
Marca una salida de voltaje y con el multimetro marca otra, no es tan confiable
Trustpilot
2 weeks ago
1 week ago