This module lets you control a range of stepper motors in both open loop and closed loop over SPI. It handles the motion control with acceleration ramps,

 just give it a target position and this module will do the rest.

This module features 8 input channels with indicator LEDs and allows you to read individual channels, or read them all at once. The inputs are all VDD, allowing you to read 12-24V inputs.

This module has 2 channels for reading 0-10V analog inputs at an impressive 12 bit resolution. Each plug also has VDD and GND to power the sensors. 

This module features 8 output channels, each with indicator LEDs allowing you to write to individual outputs or set them all at once. The outputs are all VDD, allowing you to control 12-24V components with ease.

This module features 2 analog output channels allowing you to control 0-10V devices such as dimmable LED drivers.

One of the main uses of digital outputs is to connect to relays, and this module simplifies this featuring 4 separate 5A mechanical relays, each with an indicator LED. It's the most compact SPI mechanical relay module available!