KB’s four (4) Chassis Mount, Fan Speed Controls provide infinitely variable speed control. These Solid State AC Variable Voltage Fan Controls operate from 115/230VAC, 50/60 Hz and have a maximum rating of 12.5 Amps @ 40ºC. These controls contain extended range circuitry, RFI filtering and an adjustable trimpot to set the minimum output voltage. These controls are ideal for controlling loads such as Shaded Pole, Permanent Split Capacitor (PSC) and Universal (AC/DC) motors. Applications include air curtains, ventilators, heat tunnels, stirrers, theater lighting, photocopy machines and laminar flow hoods.