FrSky, manufacturer of high performance, reliable and affordable openTx transmitters and accessories
Part Number: FRS-6PSWITCH
The 6 position switch can be installed in place of your S1 or S2 ports at the top of your Taranis radio. The result will be a 6 position rotary switch that can be used for flight modes, flap positions, or whatever you can think of. Will require basic soldering to install.
Note: While the switches can be made to work via custom curves, the new firmware (OpenTX 2.0) will make this switch much more functional.