Expression pedal needed

Hi guys
i recently got a DigiTech RP 150 guitar processor.But the problem is,it dint come with an expression pedal.so i dont really know what to do.is it possible to get a pedal(a pedal which can be used for many effects built in with the processor) separately?
and how much would it cost?

 

hello???hello??? is anybody there??
eagerly waiting for a reply

 

https://www.zzounds.com/item--MDOEXP

Whether it is compatible with RP150 is something I would not know. Consult the manuals.

 

any other brands available?
can someone tell me if this pedal would work with a DigiTech RP 150 processor?
https://www.bajaao.com/zoom-fp02-expression-pedal-p-5114.html

 

i think both are midi controllers.

 

whats a midi controller?