The Robertshaw 5500-134M, MPA-V114-1-UNM, 23UP22 Infinite Switch is a high-quality HVAC control system designed for use in various industrial and commercial applications. Made in the United States by Robertshaw, this infinite switch operates at a voltage of 120V and has an amperage of 15A. Perfect for controlling heating, ventilation, and air conditioning systems, this switch offers reliable performance and durability.