Every circuit starts with power. It uses a 9 volt battery to provide the electricity that makes your Bits spin buzz blink and shine.
The power Bit converts the 9 volts of electricity in the battery to the 5 volts that littleBits circuits run on. The power Bit also sends a signal through your circuit. Controlling this signal with inputs is how you control your circuit.
*Disclaimer: Does not include battery or cable.
This p4 Power Bit is not compatible with the Avengers Hero Inventor Kit