The Panasonic FV-NLVK1 NiteGlow LED night light is a module created for the WhisperGreen Select line of fans. Panasonic WhisperGreen Select fans can be customized by adding one of the brand's patented modules. Once installed, a fan with this module has automated nightlight functionality. This Panasonic module installs a 1 watt LED night light into your WhisperGreen Select fan. It also has a sensor that automatically turns it on when it a certain level of darkness is reached. This module has a knob that allows the user to select the desired ambient brightness of the night light. Other modules for WhisperGreen Select fans include multi-speed with time delay, condensation sensor and a motion sensor.