PORTABLE LED WATER-PROOF STRING-LIGHTS 120V are mainly used for confined space entry portable lighting apps. Scaffolding contractor install strings of water-proof string lights on working platform to ensure a save egress for workers getting on and off of scaffolding. The water proof hand lamps are designed to be hung by their hooks. Not to be hung by their cords. Doing so will allow water to seep into the wiring compartment and damage hand lamp thus void all warranties. The Daniel Woodhead brand of Water-Vapor proof hand lamp comes with a quick opening guard. This allow operator to safely and easily change out hand lamp bulb in field. The Vapor Proof designation on these types of hand lamp represent Vapor as in Water, not to be confused as a Hazardous Classified hand lamp product.