AB Electronics UK IO Zero 32 HAT for Raspberry Pi Zero

The IO Zero 32 HAT for Raspberry Pi Zero is a 32-channel digital expansion board designed for use on the Raspberry Pi. The board is based around the PCA9535 16-bit I/O expander from NXP. A pair of PCA9535 expanders are included on the board allowing you to connect up to 32 digital inputs or outputs to the Raspberry Pi.