Ecumaster CAN Switch Board V3 is a tiny device to allow easy transfer of up to 8 switch states and 8 analog signals over the CAN bus. In addition to this, the device has 4 built-in low side outputs that can be activated with a CAN bus message. The main purpose of this board is to build custom steering wheel panels containing buttons, rotary switches and indicators.
https://www.ecumaster.com/products/can-switch-board/