The whole enchilada. Here you can see all 6 SSRs, all the I/O (input/output) connectors, the controller chip, and all the sensor circuitry. To give you and idea of scale, there is a 6in. ruler in the middle.
The thing on the top is an amplifier, that we decided to place off of the board and mount on the side of the box that the board would sit in. For testing, I just used a chunk of aluminum.