Dehumidifier setup

Looking to install a dehumidifier in a small building in my back garden due to high humidity. It’s concrete block building which is also insulated and normal house windows/door but I have some electric equipment there that I don’t want damaged.
I already have a smart wifi switch that can toggle a device on/off based on temp/humidity so just need the dehumidifier connected to it.
Any suggestions for something small under €100 that I can wire to my switch and that also has a drain pipe so I don’t have to drain it myself?