The MTRJ coupler is typically used to join two MTRJ fiber optic cables together. Whether the coupler can be used for both indoor and outdoor applications depends on the specific type of MTRJ coupler and the environment in which it will be used.
In general, MTRJ coupler are designed for indoor use and are not intended for outdoor applications, as they are not typically weather-resistant. If you need to use MTRJ connectors outdoors, you may want to consider using armored fiber cables or other types of connectors that are specifically designed for outdoor use, such as LC or SC connectors with waterproof boots.
If you do use MTRJ couplers outdoors, it's important to protect them from the elements as much as possible. This may include placing them in a weather-resistant enclosure or using protective boots that can help prevent moisture from getting into the connector. Additionally, you should ensure that the fiber optic cables themselves are rated for outdoor use and are properly installed and maintained to minimize the risk of damage or degradation.
