KLEIN ET900 USB Digital Meter for USB-A Ports

The Klein Tools ET900 is a USB digital meter designed for precise measurement and monitoring of USB-A (Type-A) port electrical parameters. It is suitable for electrical distributors and switchgear suppliers needing accurate diagnostics of USB power sources. The device simultaneously measures voltage, current, capacity, energy, resistance, and elapsed time, providing comprehensive data for USB-powered devices and lighting solutions that utilize USB power. It requires no batteries, drawing power directly from the USB port under test.

Specifications

• Voltage Range: 3 to 20V DC, ±1% accuracy
• Current Range: 0.05 to 3A, ±1% accuracy
• Capacity Used: Up to 99,999mAh maximum
• Energy Delivered: Up to 999Wh maximum
• Resistance: Up to 400 ohms maximum
• Elapsed Time Display: Up to 999 hours, 59 minutes, 59 seconds
• Dimensions: 2.84" × 1.25" × 0.565" (72 × 32 × 14 mm)
• Weight: 1.1 oz. (31 g)
• Drop Protection: 6.6 ft. (2 m)
• Ingress Protection: IP20
• Operating Temperature: 14° to 122°F (-10° to 50°C)
• Relative Humidity: <95% non-condensing
• Compatibility: Qualcomm Quick Charge® compatible
• Standards: UL STD. 61010-1, 61010-2-030; CSA STD. C22.2 No. 61010-1, 61010-2-030

Features

• Simultaneous measurement of USB port voltage, current, capacity, energy, resistance, and elapsed time
• Hi-resolution LCD for clear visibility in low ambient lighting
• Mode button for screen toggling, data storage, and memory reset with up to 10 stored readings
• No batteries required; powered directly by the USB port
• Voltage and current overload detection with automatic output port disablement on overload
• Compact, lightweight design with durable housing and 6.6 ft. drop resistance
• Easy-to-use interface with clear digital readout and memory recall capabilities

Downloads & Links

• Spec Sheet
• Spec Sheet