Check the performance of USB power sources with our KW-202 Mini USB Port Current and Voltage Reader Meter Test Tool! Suitable for USB ports on your computer， cellphone， or mobile power supply， it works as an excellent testing and troubleshooting tool. The mini test tool adopts new generation integrated circuit board with precision reference source， providing accurate measuring and stable performance. Made of high-grade material， it also resists interference and heat and thus is reliable and durable. Featuring plug-and-play design， it is easy to use. Don’t hesitate to get one! You won’t regret it!                                    Features            Excellent testing and troubleshooting tool to check the performance of USB power sourcesSuitable for USB ports on your computer， cellphone， or mobile power supplyMini， lightweight size， no need for extra power supplyAdopt new generation integrated circuit board with precision reference sourceProvide accurate measuring and stable performanceDisplay the USB port’s output voltage and amperage alternatelyMade of high-grade material， resist interference and heat， reliable and durablePlug-and-play design， easy to use                                                             Specifications             Model     KW-202    <br> Type     USB Voltage Current Detector    <br> Weight     0.53oz / 15g    <br> Color     Blue    <br> Dimensions     (2.05 x 0.79 x 0.59)" / (5.2 x 2.0 x 1.5)cm (L x W x H)    <br> Working Voltage     DC3V - 8V    <br> Working Current     0A - 3A    <br> Voltage Resolution     1mA     <br> Current Resolution     10mV    <br> Voltage Error                             Package Includes            1 x Mobile Computer USB Current Voltage Detector<br>