Took considerably longer to ship and receive the light sensor than i would have thought. When the product did arrive there were no instructions on install and the unit and some broken parts. I would have thought there would have been a rubber seal when mounting to an outside electrical box but it was not included. I replaced the broken plastic washer with one i had on hand and used a hose gasket to provide a seal going into the electrical box. Not the quality one would have expected. The unit works so that's why i gave two stars instead of the one it deserves.