The projector and the connectors are waterproof as we aim to keep our clients safe. The whole scope of getting laser projectors is to eliminate the dangerous parts of Christmas (and lights) decorating such as climbing slippery ladders or working with electricity in a wet environment. The power connector is safely plugged into the projector and there is no electricity hazard in rain or snow. If you aim to feel extra safe, some clients suggest using additional products such as Press n Seal to waterproof all connections to external power plugs or power extension cords.
For more info check out our Ultimate Guide to Laser Xmas Lights – http://laserchristmaslightshq.com/ultimate-guide-christmas-laser-lights/
Or our Holiday Projector Guide explaining the five highest quality and most affordable projectors on the market – http://laserchristmaslightshq.com/best-laser-light-projectors/