Yes! The CoolBot maintains the perfect relative humidity for vegetables and fruits. There is a misconception that air conditioners constantly dry out the air, but most coolers reach a steady state humidity range of 80% - 90%.
If you want higher humidity levels, you can add a vapor humidifier with a humidistat into the cooler. It will not affect the function of the CoolBot or air conditioner.
For food safety and to minimize disease pressure in your produce, we think it's better to think about humidity control on a "micro-climate" level. We recommend that you use proper storage containers: for example, use mostly closed crates for things that need higher humidity (baby lettuce) and more open crates for things that need lower humidity. For berries, use clamshell boxes.
You don't have to spend a lot of money to store your produce for the optimal humidity levels: On the Huguenot Street Farm, Ron and Kate mostly used open sided/open topped crates, but then used plastic to line crates or lay over the top of open topped crates, and that worked fine.