Expansion HAT for Raspberry Pi

Description 16 channel digital input / outputs 8 channel 12 bit resolution analog input (ADC) 2 channel 12 bit resolution digital to analog output (DAC) Real time Clock (RTC) with CR2032 battery holder The Expansion HAT for Raspberry Pi is a versatile digital and analog expansion board.  It allows connecting the Raspberry Pi to switches, lights, sensors, and many other devices giving a way to communicate with the outside world. The Expander Pi plugs onto the GPIO port on Raspberry Pi and can be securely fitted to the Raspberry Pi using the optional mounting kit. It is powered through the host Raspberry Pi using the GPIO port or via the on-board power connector.  Extended pins on the GPIO connector allowing stacking the Expander Pi along with other expansion boards. Using the Expander Pi can connect 8 analog inputs, 2 analog outputs and 16 digital input or outputs to the Raspberry Pi. The Expander Pi also features an on-board Real Time Clock (RTC) to ensure that the Raspberry