The DUPLEX 2.4EX MSW expansion module allows the connection of up to six other buttons/switches, such as stick switches. This expansion module is designed for all JETI Duplex DC / DS transmitters.
1 DUPLEX 2.4EX MSW expansion module for DC/DS transmitters
The MSW expansion module currently can not operate in parallel with the operation of the DS-12 as a teacher transmitter (PPM cable connection to the student transmitter). The necessary SW adaptation in the DS-12 will be done with one of the upcoming updates.