Determine whether the product is used indoors or outdoors
2, The material of the shell and the material of the connection terminal are also required. If outdoor, the waterproof box plastic and the cast aluminum can be all, but the cast aluminum waterproof box may be better, but the price is higher. There are also wiring terminals with copper and iron. It is recommended to choose copper terminals.
3. The size of the product is of course suitable for the junction box, and the smaller the better from the economic point of view, the box size is generally chosen according to the terminals installed in the waterproof box, and sometimes the length and thickness are hard to be required.