Panasonic FV-NLVK1 Whisper Select-Plug and Play Nightglow LED Night Light Module Add on option for Whisper Green Select Fans -Nightglow LED Night Light Specialized photocell feature automatically turns on the 1 watt LED night light when darkness is sensed in the room Hi/Low brightness switch enables you to fine tune the photo cell to work in conjunction with the darkness level of the room This module also activates an automatic 20 minute delay off timer for the fan