I needed to make a sprinkler wire connection at a spot in the yard where there would be a watertight box that could be sunk underground. It worked great.
Pros
Widely Used: The external junction box is suitable for various types of LED billboard, LED tunnel light, LED streetscape light, LED outdoor display, LED garden light. Further application in coastal, river, marine or underwater construction, civil engineering, mining, solar wind power, solar water heaters, various machines and systems.