Remote testing of the Brewer using sighting push buttons. This will also tests the push button switches.

Usage:
Always: CCW = Switch to Mode 0
Mode 0: UP/DOWN = move IRIS
CW = Switch to Mode 1/2/3 (iris closed/mid/open)
Mode 1: UP = SL ON/OFF; DOWN = HG ON/OFF
Mode 2: UP = FW1 UP; DOWN = FW1 DOWN
Mode 3: UP = FW2 UP; DOWN = FW2 DOWN