TPL5110 Power Timer Breakout Board Adafruit TPL5110 Power Timer Breakout Board is a fully assembled board with a TPL5110 power timer. This board is a stand-alone breakout to turn any electronic device into a low-power device. The TPL timer will periodically turn on/off projects power by adjusting the potentiometer or resistors. The timer can vary from once every 100ms to once every two hours.