How you are ready to use your Doorbell! Figure d On the back of the Natural Sounds Doorbell base unit vou will sae the 2-Position Selector Switch. This is used in select the Normal Soda regular doorbell) or Fart Soda {ses Figure 4), Move the Selector Switch fo the desired position. Now, 2-Position. when the Bly Crown Button is pressed, your Natural Sounds Selector Switch Doorbell will play Funny Fart Noises or you will hear a simple Normal Mode.