This USB In-Line Voltage and Current Meter with OLED Display is a lot like the Charger Doctor we carry - if the doctor was a talented surgeon who just lost her medical license and has nothing to lose.  Just like the charger doctor, you can use this...

Caution! This switch is NOT compatible with the Raspberry Pi 4B. Please see the Type-C Power Switch for Raspberry Pi 4 instead. Add a power switch to any USB-powered project simply by plugging this between the USB power port and the USB cable. This...