These manual motor speed controls can be used with most shaded-pole or permanent split capacitor motors in their amperage range, such as those in our FAN900S and FAN1200S Ducted Fans (larger fans should be controlled with the VMS400S or VMS500S Motor Speed Controls). Controls motor speed between 20 and 100% of total fan capacity, and can also act as an on/off switch. Supplied in a watertight electrical enclosure with code-approved connectors. 115 volts, 5 amps.