Description

Price: £25.99 - £20.04
(as of Aug 14, 2025 06:17:42 UTC – Details)

From the manufacturer

About Klein Tools

As an American manufacturer of hand tools for more than 160 years, Klein Tools makes premium-quality, professional-grade tools that deliver performance, durability and precision. Our team continues to put six generations of expertise into each tool by using the highest quality materials and superior workmanship.

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.

USB Power Meter, USB-A Digital Meter for Voltage, Current, Capacity, Energy Resistance, Klein Tools ET900

The Klein Tools ET900 is a USB digital meter for common standard USB-A (Type A) ports including Qualcomm Quick Charge* ports. It accurately and reliably measures and displays the USB port voltage, current, capacity, energy, and resistance simultaneously. It can function with any USB-A port that has the ability to deliver power. It requires NO batteries as it draws power from the power source to function.

3 to 20V DC; Current: 0.05 to 3A Store and recall up to 10 readings Voltage and current overload detection Hi-resolution LCD for clear visibility in environments with low ambient lighting Durable cable to allow easy access to hard-to-reach port Rugged, pocket-sized, and light weight Klein industrial design stands up to jobsite demand Built to withstand a 2m drop

Tests most common standard USB-A ports, including Qualcomm Quick Charge* ports

No batteries needed; powered by the USB port being tested

Continuously monitor up to 1000 hours of voltage, current, capacity/charge delivered, energy, and resistance (calculated)

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Customer Reviews

4.4 out of 5 stars 605

4.7 out of 5 stars 1,249

4.4 out of 5 stars 1,062

4.4 out of 5 stars 1,488

4.4 out of 5 stars 1,488

4.8 out of 5 stars 8,408

Price

£124.95£124.95 £34.19£34.19 £66.85£66.85 £47.42£47.42 £47.42£47.42 £14.31£14.31

Mfg. No.
55429 55895 AEPJS2 ET910 ET920 RT210

Description
Tradesman Pro Electricians Tool Belt, XL, Klein Tools 55429 Tradesman Pro Magnetic Wristband, Klein Tools 55895 Speaker, Bluetooth & Wireless Portable Jobsite Speaker, Plays Audio and Answers Calls Hands Free, with Magnetic Strap, Klein Tools AEPJS2 Meter and Tester, USB-A Digital Meter for Voltage, Current, Capacity, Energy, Resistance, Max Current, Klein Tools ET910 Meter, USB-A and USB-C Digital Meter for Voltage, Current, Capacity, Energy and Resistance, Klein Tools ET920 GFCI Receptacle Tester, Klein Tools RT210

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Customer Reviews

4.5 out of 5 stars 262

4.4 out of 5 stars 3,146

4.4 out of 5 stars 3,146

4.7 out of 5 stars 1,517

4.7 out of 5 stars 966

4.7 out of 5 stars 1,517

Price

— no data
£25.63£25.63 £31.61£31.61 £100.41£100.41 £54.57£54.57 £107.09£107.09

Mfg. No.
93LDM65 ET05 ET10 IR5 IR07 IR10

Description
Digital Laser Distance Measure 65-Foot, Backlit LCD, Distance, Area, Volume, Pythagorean, Klein Tools 93LDM65 Digital Pocket Thermometer, Klein Tools ET05 Magnetic Digital Pocket Thermometer, Klein Tools ET10 Dual Laser Infrared Thermometer Klein Tools IR5 Digital Thermometer, LCD, Dual Infrared (IR) and Probe Pocket Size, Klein Tools IR07 Thermometer,Infrared Digital Thermometer Gun with Dual Targeting Laser, 20:1, Klein Tools IR10

3 to 20V DC; Current: 0.05 to 3A
Continuously monitor up to 1000 hours of voltage, current, capacity/charge delivered, energy, and resistance (calculated)
Tests most common standard USB-A ports, including Qualcomm Quick Charge ports
Store and recall up to 10 readings
Voltage and current overload detection