http://info.opto22.com/raspberry-pi-io
The Digital Industrial I/O for Raspberry Starter Kit includes the following:
OPTO-P1-40P - Digital I/O Carrier Board for Raspberry Pi, including Pi mounting hardware
G4PB8H - G4 8-channel Mounting Rack with Header Connector
G4IDC5MA - G4 DC Input 10-32 VDC, 5 VDC Logic with Manual/Auto Switch
G4OAC5 - G4 AC Output 12-140 VAC, 5 VDC Logic
G4IAC5 - G4 AC Input 90-140 VAC/VDC, 5 VDC Logic
G4ODC5 - G4 DC Output 5-60 VDC, 5 VDC Logic
The Starter Kit is compatible with any model Raspberry Pi that offers the 40-pin GPIO header connector, including Raspberry Pi 1 Models A+ and B+, Pi 2 Model B, Pi 3 Model B, and Pi Zero.
The Starter Kit gives you room to expand. Add up to 4 more G4 I/O modules from the extensive list of compatible G4 inputs and outputs.
Sense and switch industrial-level loads with your Raspberry Pi®.
With Opto 22's Digital I/O System for Raspberry Pi, you can switch real-world electrical loads like industrial motors and pumps, and sense circuits and status through industrial-grade sensors, with your Raspberry Pi's GPIO.
Use your favorite Pi-supported programming language like Python, C, and more. Or, use Node-RED to quickly read and write I/O with these Pi build instructions.
For more information, including details about selecting your own racks and I/O modules, see our Selection Guide for Industrial Digital I/O for Raspberry Pi.
http://info.opto22.com/raspberry-pi-io