First ensure the unit power is on (press and hold the power button to turn on, you will see a green indicator light illuminate). If nothing happens, your unit may need to be recharged.
Quickly press the nightlight button to turn on the nightlight.
Once the nightlight is turned on, you can press and hold the nightlight button to adjust the brightness up and down. Let go when you get to your desired brightness.
To turn the nightlight off, press the nightlight button quickly.