First Look: YZXstudio Black 18-bit ADC USB Power Monitor #2

Conclusion of my first look at the black version of the YZXstudio USB power monitor. http://www.ebay.com/itm/USB-2-0-Power-Monitor-Black-YZXstudio-18-Bit-Voltage-Current-Meter-OLED-/201397906943 http://www.ebay.com/itm/Bluetooth-Module-UART-Serial-Interface-SPP-CA-works-with-YZXstudio-USB-Monitors-/201414967094