The Fusion Brain has 14 inputs, not 4.
There is no way to directly feed 120VAC into the board. That would require quite a bit larger traces and a completely new design. Just not feasable. Now you can take that 120VAC and transform it to DC if needed. I dont know what type of machine you are running but if you could replace the VAC buttons to actually send DC and that would trip a relay for the VAC. So the existing wires on the vac button would go to a relay, and then the leads on the current button would go to the coils of the relay (with a power source and ground of course).
The Fusion Brain cannot control or stream video feeds. If you mean control the cameras as in place them on rotating bases or something and have the brain control that, then yes.
The temperature sensors we sell is no problem.
And the log file created is in html format now read from an xml file with the data, so if you setup a webserver using Apache or something free and easy, then you dont have to remote desktop to monitor. However, if you want to control, right now Remote Desktop is the only option. I am planning on doing remote control though, but I am just too swamped right now to think about that!