[Al Skierkiewicz]

There was a lot of confusion. The word from IFI is there is no difference between the red and blue 884. The blue 884 even had a case change a few years ago, but the internals did not change. The difference in the Spikes, as I remember, the Red Spike could pull both outputs to negative power but not both to positive. This required a few diodes to control dual solenoid valves. The Blue Spikes that are now provided can select both outputs to positive or negative power supply.