Eight HV Digital Inputs 8-Layer Stackable HAT for Raspberry Pi

Description

The card has eight optically isolated digital inputs. Separate input pins are provided for low or high voltage ranges. Inputs can read both DC and AC signals. The card communicates with Raspberry Pi using only the I2C port, leaving all the other 24 GPIO pins available for your use. It has also an RS-485 port, a power LED and a push button that can be used to shut down the Raspberry Pi. Pluggable connectors make the 8-INPUTS card easy to use when multiple cards are stacked up. The card is compatible with all Raspberry Pi versions from Zero to 4. All stacked cards share the I2C bus using only two of the Raspberry Pi’s GPIO pins to manage all eight cards. This feature leaves the remaining 24 GPIOs available for the user.