Tutorials : How to Get Full Movement 
from a 2 Position Switch

Harry Curzon  3 August 2002

Mpx do not seem to sell a 2 position retract/flap switch!  Their 2 pos switches are wired centre and one end only, the other end is not connected to the plug. The 3030/4000 control inputs interpret this as a centre and one end of travel whereas retracts and flaps want end to end.

To get round this, simply wire the switch with 3 wire cable and the Tx will now interpret the switch as end to end, not end to centre.