AUControls.

Mod. ASC1-0.5, Open Chassis. 

DC Motor Speed Controller for: 1/2 HP DC Motor

Output: 0 ~ 90 VDC - 6 Amps., Field 100/200 VDC - 1 Amp.

Input: 110 ~ 130 VAC, 50/60 Hz.

Made in USA.

Controller Dimensions: 4" X 4" X 1.5".

1 Year warranty.