Dimmer With Push On/off Knob, 3-Way | Controls 600 W Incandescent or Halogen Loads. Push On/off; Rotate to Adjust Light Level | Dimmable: Non-Dimmable ; Operating Temp: -20c (-4f) to a Maximum of +45c (+113f) ; Nsf Approved: Yes - Approved | 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