This control replaces a number of controllers including:
SnowEx OEM controllers D5525 and D6527.
Western 51037, Fisher 51073 and Blizzard 51033.
You can find a list of the spreaders this fits below. It has two knobs to adjust the spinner and auger and digital number displays. It also had a backlit power switch and vibrator switch. This is the SAM / Buyers Controller 9032021. It comes with the bracket for mounting.