Adafruit-Precision-Voltage-Reference-LM4040-Breakout-2-048V-and-4-096V-Adafruit-2200-P-The-Adafruit-Precision-Voltage-Reference-gives-you-2-x-high-precision-voltages-which-are-accurate-to-0-1-A-great-little-gadget-for-measuring-the-accuracy…View more