KLEIN TOOLS ET920 USB Digital Meter Instruction Manual

: June 12, 2024
: KLEIN TOOLS

Table of Contents

GENERAL SPECIFICATIONS
FUNCTION BUTTONS (FIG. 1)
WARNINGS
CAUTION
SYMBOLS ON TESTER
OPERATING INSTRUCTIONS
CLEANING
STORAGE
FCC & IC COMPLIANCE
DISPOSAL / RECYCLE
CUSTOMER SERVICE
References
Read User Manual Online (PDF format)
Download This Manual (PDF format)

KLEIN TOOLS ET920 USB Digital Meter

GENERAL SPECIFICATIONS

The Klein Tools ET920 is a USB digital meter for both USB-A (Type A) and USB-C (Type C) 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 and most USB-C ports that have the ability to deliver power. It requires no batteries, as it draws power from the power source.

Measurement Range:
Voltage: 3 to 20V DC, accuracy +/- 1% (+/- 2 Bytes)
Current: 0.05 to 3A (Type A), 0.05 to 5A (Type C), accuracy +/- 1% (+/- 2 Bytes)
Charge delivered: 99,999mAh MAX
Energy delivered: 999Wh MAX
Resistance: 400Ω MAX
Elapsed Time: Up to 999 hours, 59 min, 59 sec
Based on display layout
Operating and Storage Altitude: Up to 6562 ft. (2000 m)
Operating and Storage Temp: 14° to 122°F (-10° to 50°C)
Relative Humidity: <95% non-condensing
Dimensions: Tester: 2.95″ × 1.96″ × 0.6″ (75 × 50 × 15 mm) Cable: Approx. 4″ (100 mm)
Weight: 1.7 oz. (49 g)
Pollution degree: 2
Drop Protection: 6.6 ft. (2 m)
Ingress Protection: IP20
Compatibility: Qualcomm Quick Charge® Compatible
Standards: Conforms to UL STD. 61010-1, 61010-2-030.
Certified to CSA STD. C22.2 No. 61010-1, 61010 2-030.
Specifications subject to change.

FUNCTION BUTTONS (FIG. 1)

MODE BUTTON 5 (Screen Toggle/Data Storage/Memory reset)
The Mode button serves three purposes:

Switch between screens (FIG. 2):
From the default screen, pressing and releasing once will switch to the Memory Screen.
- A. DC voltage
- B. DC current
- C. Capacity/Charge delivered (mAh)
- D. Energy delivered (Wh)
- E. Resistance (Ω)
- F. Elapsed Time (Hour:Min:Sec)
- G. Memory Location (M:1, M:2, etc)
- H. Memory Clear/Reset (“CLR”)
- I. Connector type in use (USB-A or USB-C)
Data/Memory Storage:
To record a reading during live monitoring event, press and hold the Mode button for 3 seconds. Release the button after the memory location (i.e. M:1A) flashes momentarily on the screen. The next set of readings will be stored at the next available location until all 10 memory locations are used. NOTE: After all 10 locations are used, subsequent readings will overwrite the original 10 stored readings, beginning with M:1. The memory location will reflect the connector type in use when the data was stored (i.e. “M:1A” if USB-A, “M:1C” if USB-C). NOTE: When in the Memory screen, if the Mode button is not pressed within 3 seconds, the display will return to the Default screen.
Memory Recall/Reset:
When in the Memory Screen, repeated pressing will cycle through all 10 memory locations, beginning with M:1A or M:1C. You must scroll through all 10 locations to exit. NOTE: If no data has been stored into memory, pressing the Mode button will do nothing. The ET920 will only display memory locations containing stored data.
To reset or erase all data in memory, press and hold the Mode button for 5 seconds from the
Memory screen until the letters CLR flash in the upper right corner (FIG. 2). All data in memory will be erased in all 10 memory locations.

FUNCTION BUTTONS

Power source INPUT (USB-A)
Power source INPUT (USB-C)
Load OUTPUT (USB-A)
Load OUTPUT (USB-C)
Mode button
LCD display

NOTE: No user-serviceable parts inside.

WARNINGS

To ensure safe operation and service of the tester, follow these instructions. Failure to observe these warnings can result in severe injury or death.

This tester will NOT display current below 50 mA, even if it is allowing this to pass through. NOTE: The display will show zero current.
DO NOT use with ports that operate outside of the rated voltage and current.
Before each use verify tester operation by measuring a known voltage or current.
NEVER use on a circuit with voltage or current that exceeds the maximums specified for this device. Use caution when working with voltages above 25V AC RMS or 60V DC. Such voltages pose a shock hazard. Voltage above 24V DC will damage product. Display will read “OVERLOAD” in this condition and output port will be disabled. Voltage above 24V DC will damage product. Display will read
DO NOT use during electrical storms or in wet weather.
DO NOT use if tester appears to be damaged.
Use caution when working with voltages above 25V AC RMS or 60V DC.
Such voltages pose a shock hazard. NOTE: Voltage above 24V DC will damage product.
Such voltages pose a shock hazard.
Always adhere to local and national safety codes. Use personal protective equipment to prevent shock and arc blast injury where hazardous live conductors are exposed.

CAUTION

DO NOT attempt to repair this tester. There are no serviceable parts.
DO NOT modify this tester in any way.
DO NOT expose to extremes in temperature or high humidity.
This tester will NOT be able to monitor a source port if any of the following conditions occur:
- The USB port or plug is not properly connected.
- The source device shuts down. Some portable storage batteries have auto-shutdown or standby modes to save power if no load is detected from downstream device.

SYMBOLS ON TESTER

**| Important information: It is important that users of this tester read, understand, and follow all warnings, cautions, safety information, and instructions in this manual before operating this tester. Failure to follow instructions could result in death or serious injury.
---|---
**| Warning – Risk of electric shock
| This product has been independently tested by Intertek and meets applicable published standards
| Conformité Européenne: Conforms with European Economic Area directives
**| UKCA –** UK Conformity Assessment
| Read instructions before using
| USB

OPERATING INSTRUCTIONS

MONITORING MODE
NOTE: The USB-A input must be used with the USB-A output only. The USB-C input must be used with the USB-C output only. This product does not function as a USB-C to USB-A adapter.
NOTE: USB-A and USB-C sides CANNOT be used simultaneously. The rst device connected, whether USB-A or USB-C, will be the monitored source.
NOTE: The input plug must be connected to a powered USB device before the downstream device is connected to the output port. “Downstream device” refers to any device that has the ability to draw current over USB.

Connect one of the ET920’s input connectors (USB-A or USB-C) to the USB power source that needs to be monitored (FIG. 3).

• The LCD screen will turn on with Klein Tools logo screen and move quickly to the Default Screen (FIG 2). NOTE: For USB-C, a downstream device must be connected to turn on the ET920.
• If the source port has power, it should only display a live voltage reading within the operating range, 3-20V DC. NOTE: Most USB ports deliver ~5V DC.
Connect the device being charged to the output port of the ET920 (FIG. 3). The display will show actual readings (FIG. 2).

NOTE: “mAh” resets only when source is disconnected

CLEANING

Be sure the tester is disconnected from both the input and output port. Use clean, dry, soft lintfree cloth to wipe down the entire unit.

Do NOT use abrasive cleaners or solvents.

STORAGE

Do not expose to high temperatures or humidity. After a period of storage in extreme conditions exceeding the limits mentioned in the General Specifications section, allow the tester to return to normal operating conditions before using.

FCC & IC COMPLIANCE

See this product’s page at www.kleintools.com for FCC compliance information. Canada ICES-003 (B) / NMB-003 (B)

DISPOSAL / RECYCLE

Do not place equipment and its accessories in the trash. Items must be properly disposed of in accordance with local regulations. Please see www.epa.gov/recycle for additional information.