EZ I/O is a new revolutionary concept in Industrial/PLC I/O. Instead of the traditional PLC I/O that mounts vertically in horizontal back plane, EZ I/O modules snap horizontally into the back plane. This allows very compact construction which not only provides high functionality, it retains and even enhances features found only in world class I/O costing 10 times more. This new concept has 5 patents pending.
The unique PCB construction of the EZ I/O module gives it the capability of incorporating high level semiconductor chips in a very compact 2x2x1" construction. This extremely innovative design has made it possible to dramatically reduce the cost of Analog I/O modules whereas it used to cost over $500 to get 4 Analog Inputs and 4 Analog Outputs, here is what you can get for just $99:
1. 4 Analog Outputs (0-20 ma or 4-20 ma current source are DIP switch selectable).
2. 4 Analog Inputs (0-20 ma or 4-20 ma current source are DIP switch selectable).
3. Each Analog I/O is of 12 bit resolution.
4. 0.2% Gain Error on Analog Output.
5. Gain Error of ±2 Counts on Analog input Modules.
6. Snap-in module construction
7. 11 point removable phoenix terminal block capable of 4 of 22 AWG or 2 of 18 AWG wires for each terminal point.
8. Wiring duct for routing field wires.
Additional Information - 
This truly is a paradigm shift in Industrial/PLC I/O.