PWM Dimmer, 4 Channels - 7 Amps Per Channel, for LED or Incandescent Lighting - Dimmer Controller - Auto RV Marine Aircraft Interior Accent Lighting Powerful 4 channel PWM dimmer for interior lighting inside your RV, Truck, Auto, Boat or Aircraft. 12 VDC, 4 independent rheostats each control a separate circuit Self-contained controller with marked rheostat connections, output connections and 12VDC input Ideal for controlling multiple light sources in your RV, Truck or Boat - interior lights, overhead lights, map lights, etc. Includes installation and wiring instructions; easy-to-install