The switch on the cord is enclosed in a soft plastic which protects it from any water. I get zero sunlight in the winter and my plants would be sad without sansi.
Currently growing bell peppers cantaloupes and lemon tree under this 1 light. I have a 36w and 70w winged lights in this space (see photos) it is pretty easy to setup and no tools are required.
Not even the size of a t5, let alone t8. Only about 6 inches per light. The aluminum panels are not adjustable at all.