Twistlock Photocell | Controls 600 W Incandescent or Halogen Loads. Push On/off; Rotate to Adjust Light Level | Fan Control (Left) Use Slide to Turn Fan On/off and Adjust Fan Speed. 3 Quiet Fan Speeds Designed to Prevent Motor Hum (For Use With One Ceiling Paddle Fan). Dimmer (Right) Toggle Turns Light On/off. Slide Up to Brighten, Down to Dim | Features: Electronic Photocell, Zero-Cross Technology, Led Fixtures Totaling 2220 Wtt @ 277 Vac, Non-Drifting Silicon Light Sensor Ir Filtered, Fail Mode: OnFurbay Electric Supp