1. The junction box provides an enclosed space for wire connections, preventing exposed wires from coming into contact with walls, metal components, etc. This reduces the risk of electric leakage and short circuits, and in particular, can prevent circuit faults caused by damp walls.

2. It does not chemically react with water, acids, alkali, or humid environments. In damp or humid places such as bathrooms, kitchens, and basements, it is not easy to rust or rot, and has a long service life.