The biēm is designed with proprietary motion-detecting technology enabling it to detect when it’s picked up and begin warming . No indicator lights will come on during this preheating period, but it is warming in the background. You will still have to turn the biēm on to spray, but the ready to spray time will be reduced once you do. For instance, if the biēm is kept in the refrigerator door it knows when the door is opening and closing, side-to-side, versus being lifted vertically and would begin preheating when it is picked up.
The biēm will turn itself off after a few minutes of non-use or of no movement.