Suncourt VS100 Variable Speed Fan Controller - Solid State AC Motor Speed Fan Control. It is designed for mounting in a 2" X 4" electrical wall box. It operates from 115 VAC, 50/60 Hz and has a maximum rating of 2.5 Amps @ 25C. It provides 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, a minimum speed trimpot and a flame retardant ABS enclosure. Applications include range hoods, vibrators, humidifiers, fireplace blowers, fans, laminar flow hoods, heat tunnels and stirrers. includes mounting kit that includes dial plate, knob, mounting screws, wire connectors and instruction sheet. Features: Built-In On/Off AC Line Switch Minimum Speed Trimpot RFI Filter (Provides RFI and EMI Suppression) All Models Mount in a Standard 2" x 4" Electrical Wall BoxSpecifications: Volts - 115 VAC (50/60 Hz) Maximum Current Rating (Amps RMS) - 2.5Agency Approvals* UL Listing / Recognition CSA Certified ISO-9001: 2000 QMS Certified