***Update 8/1/2020 NOT WATERPROOF AT ALL! The middle of the button is not sealed at all and moister gets in and corrosion causes malfunction. I have ordered tons of these for projects that require at least a "splash proof” switch but these definitely are not up to any sort of standard. Now I’m stuck with all these switches that don’t do what the seller says they do. Also, the bottom pops off easily and then you loose connection and the button sticks sometimes.Update: Seller emailed me the wiring instructions.No wiring instructions. I ordered 30 of these and no wiring instructions found.