The MA-R Dimmer from Lutron. This accessory dimmer is used with the standard Maestro Dimmers for multi-location dimming. Use in place of your 3-way and 4-way switches. Features a clean, flush, stylish appearance.
# Special Features: Two taps on the switch brings lights on to full brightness; press and hold the switch to slowly fade lights to off over 10 seconds
# Multi-location dimming from up to 10 locations
# Uses standard single-pole and 3-way wiring for easy installation in any home
# Power failure memory
# Superior RFI suppression
# Front accessible service switch (FASS) to disconnect load