A USB power sensor connects to a power meter and measures the power level of a signal. A small, portable device, a USB power sensor measures the power consumption of electronic devices that connect to USB ports. These sensors can provide real-time data on parameters such as voltage, current, power, and energy consumption, enabling users to thoroughly assess the power usage of their devices in different operating conditions. Typically, sensors connect easily to USB ports, making them a convenient tool for analyzing the power dynamics of various electronic devices.