I have seen the product first hand and it a nice product at a fare price. Robert (owner of Switch-Pros) and I spoke at length regarding several next generation software and hardware plans for the product line which will significantly improve the product from its current state. If these changes do come to fruition, they will be worth waiting for.
Two of these in a class-8 would be a very cost effective method of going away from circuit breakers, relays and toggle switches, provided the components have the durability to survive in a true off-road race vehicle.
Be warned, these units need to dissipate a tremendous amount of heat and this will need to be considered when selecting a mounting location.
Are these compatible with ECM's? E.g. The ECM is used to currently close a relay for fans. With a override toggle switch to turn the fans on for a cool down.
So can it accept a ECM trigger?
little update as I talked to Switch Pros yesterday. They've updated their standard SP8100 now with one external trigger input that can be used to control up to two of the circuits. (ie. temp sender to trigger fans to come on automatically).
They are still in the works on the more powerful unit but that is at least 6-12 months out as they are still refining and plan on adding functions to the version they have now.
I ordered up two units for my Bronco, I'll let you know how it goes.