Digital PWM Motor Speed Controller - 50A (ROB-09668)

Iv spend about 100$ for bad DC brushed motor controllers from Ebay.

Now i decided to go serius. I found this ROB-09668 at Sparkfun. Is it possible to control this from Arduino? I dont see any pins to attach Arduino.

Any one used this controller before?

Do you know of a better DC motor controller? (40A, min.30A)