How do I power the Elfin Flip Pro off?

Sleep:
*Sleep mode unavailable when powered by the built-in battery*
(a) Press the power button on the remote control for the projector to enter sleep mode.
(b) Press the power button on the projector body for the projector to enter sleep mode.
Shutdown:
(a) Long-press the power button on the remote control, select "Shutdown" from the on-screen menu, and the projector will power off.
(b) Press the power button on the projector body for 5 seconds to turn off the power.