I received this box to store an external photo sensor/timer and an external photo sensor/timer light to plug in. I cut out part of the front cover and then sealed the hole with clear plexiglass to let light through for the light sensor. Once mounted on the wall and closed, this box works like a charm and protects everything. Totally waterproof! great Make box like this Make sure you convert MM so you know what you're getting (see attached photos) I didn't have a choice as to size as the plug/timer was large to plug in.