On products they sold to be used in a damp marine environment. They have corrected that on their current products. I haven't seen any electric bilge pumps on the chandlers shelves that especially impressed me. They all seem to be built as cheaply as possible. FWIW, I just installed one of these in my skiff, an all in one pump and float switch. It's inexpensive and low capacity but should be more than adequate to keep ahead of the rain water.