This listing is for 1 KBWC-115K Speed Control which includes the speed control, face plate, wire nuts and instructions. AC Motor Fan Speed Controls Request for Product Quote KB's 21 Wall Mount, AC Motor Fan Speed Controls are packaged for Distributors. They are designed for mounting into a 2" X 4" electrical wall box. They operate from 115/230/277VAC, 50/60 Hz and have a maximum rating from 2.5 - 20 Amps at ambient from 25° to 40ºC. They provide infinitely variable speed motor control for Shaded Pole, Permanent Split Capacitor and Universal (AC/DC) motors. The variable speed motor control contains an on/off line switch, a high gain RFI noise suppression filter, an adjustable trimpot to set the minimum speed and a flame retardant ABS enclosure. Applications include Ceiling Fans, Commercial Vent Hoods, Industrial Blowers, Laminar Flow Hoods, Heat Tunnels and Magnetic Stirrers.KB Electronics