USB Digital Meter - USB-A (Type A)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.Features:3 to 20V DC; Current: 0.05 to 3AContinuously 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; portsStore and recall up to 10 readingsVoltage and current overload detectionHi-resolution LCD for clear visibility in environments with low ambient lightingDurable cable to allow easy access to hard-to-reach portsRugged, pocket-sized, and light weight Klein industrial design stands up to jobsite demandsBuilt to withstand a 6' (2M) dropNo batteries needed; powered by the USB port being testedSpecifications:Type: USB-A (Type A)Application: USB Port Voltage, Current, Capacity, Energy and Resistance (Calculated)Special Features: Klein Tools' Most Compact USB MeterVoltage: 3 to 20V DCCurrent: 0.05 to 3ACapacity Used: 99,999mAh MaximumEnergy Delivered: 999Wh MaximumResistance: 400 ohms MaximumElapsed Time: Up to 999 Hours, 59 Min, 59 SecsUSB Compatibility: USB-A; Qualcomm Quick Charge; CompatibleDrop Protection: 2M (6.6')Ingress Protection: IP20Display: LCDMaterial: PolymerOverall Length: 2.84" (72.1mm)Overall Height: 0.565" (14.4mm)Overall Width: 1.25" (31.8mm)Weight: 1.1oz (31g)WARNING: This product can expose you to chemicals which are known to the State of California to cause cancer, birth defects or other reproductive harm. For more information go to P65Warnings.ca.gov.