Dimmer With Push On/off Knob, 3-Way | Controls 600 W Incandescent or Halogen Loads. Push On/off; Rotate to Adjust Light Level | Features: Auto Daylight Saving Time Adjustment, Low Battery Indicator, Cr2 Lithium Battery Provides a Minimum of 2 Years of Time Keeping Without Ac Power, Manual Override Feature, User Program Selections Are Stored in Non-Volatile Memory, 5 Year Warranty | 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