AUControls, made in USA.
Mod. ASC1-0.5, Open Chassis.
Industrial Duty, Reliable, Efficient, Durable.
DC Motor Speed Controller for 1/4 HP DC Motor
Output: 0 ~ 90 VDC - 4 Amps., Field 100/200 VDC - 1 Amp.
Input: 110 ~ 130 VAC, 50/60 Hz.

Drive dimensions: 4" X 4" X 1.5".
1 Year warranty.