Switches 1 and 2 are used for elevator shaft address selection. This allows you to select the shaft where the device is placed. From 1 to 4*.
Switch 3 enables manual initiation of learning mode without a display installed (this function is not recommended).
Switch 4 controls the MKCANbus termination resistor (end of line or through).
*Important - Shaft number must correspond to the other items connected along the MKCANbus e.g. PSP, PRP, DCP, DAU etc. Ensure this is the same as your display.