Twistlock Photocell | Controls 1000 W Incandescent or Halogen Loads. Toggle Turn Lights 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: On | Flexible and Easy to Use Device That Allows the User to Control Lutron Wireless Load-Control Devices From Anywhere in the Space. Battery-Operated Control Requires No External Power or Communication Wiring. Provides Control for Caseta Wireless Controls, EneFurbay Electric Supp