My kitchen is finished and this model doesn't need a wall switch. This is the third one of this brand/model I installed during the last twenty years so, by average, it works for almost ten years. My wife is using it a lot and very happy with the capacity and ease of use. 
I also bought and installed one for my daughter. Both systems have dishwasher attached.
Will be nice to have a clear cover and light so we can see what's going on inside. The existing dishwasher drain hose was cut to fit the old and narrow drain pipe. I had to use another hose that wasn't trimmed. I wish you could include a conversion kit