All of the power in your room is dependent upon your room key being in this slot. You remove the key when you leave, everything shuts off. SInce we were charging devices 'n' such, we cheated by leaving my driver's license in there. Sorry, Gaia. I needed my batteries charged!

IMG_3757,iPhone 8,1/7 sec at f / 1.8, 3.99 mm, ISO 100