MOTM

hi!
hope someone can help.

"The MOTM-850 interfaces Roland, Yamaha and CV-out pedals to other 
MOTM modules. It provides 2 signals: a CV out that can be set with 
RANGE and OFFSET controls to cover -7.5V to +7.5V with 
varying 'sensitivity', and a GATE output."
 
which pedals does this interface exactly work with? could someone 
possibly provide model number for the yamaha and roland pedals? and 
what is a "cv-out pedal"? where can i get these pedals? which ones 
are motm-like-quality?

are these pedals on/off-pedals, or do they provide a continually 
changeable voltage (more like a guitar ahwah pedal?)

what exactly will the output of the 850 be - i was hoping to use this 
thing with a filter to provide some wahwah-like effects. is this 
possible?

thanks!