FX Junction Box Waterproof IP68 2 Way Plug Line M20 Coaxial Cable Connector Wire Range 5 to 12mm Outdoor External Electric Power Cord Boxes

The right connector

Easy to install, still working fine.

I can readily recommend. I used these when installing a low voltage, solar powered sign illuminating light for our condo development. I was able to use a pair of these to splice in a heavy gauge power cable rated for direct ground burial for a long run between the solar panels and the remote lighting unit. Thus I was able to use a MUCH lower resistance cable from the solar connector to the light to GREATLY reduce the voltage drop compared to using the small gauge wiring provided by the manufacturer [much better for fully charging the batteries contained in the remote LED light to insure longer winter illumination periods from in the short winter days. An additional plus, it provides an easy-access set of "test points" at each end of the connecting cable run for troubleshooting should the lighting system fail to operate in the future. Be well in these COVID times.

Easy to use and works great. Only issue is the water tight connections are perfectly round and some spots felt the Romex wasn't fully isolated on its own with just the case. I put some silicone in just to be sure.

Needed a simple underground junction box to repair a rework of the wiring (120 V AC) to a post lamp in front of the house. This worked perfectly for that application. The wires seal using a built in compression nut at each end, but I also applied a bit of silicon grease as insurance at the two places where wires entered the box. Nice little device to join the wires included. Looks like it should last and remain waterproof, but time will tell. As with ANY outdoor 120VAC wiring, make sure it is protected with a quality Ground Fault Breaker. The cost of a decent GFCI breaker is cheap compared to the priceless loss of a single human life. Follow all local electrical codes in your area.If I ever upgrade my post lamp, I'll switch to a low voltage setup. Much safer overall.

I was able to get a watertight seal for my electrical service to my light post. I took another persons advice and used silicone to seal the ends just for extra protection, worked out great.

We machine it a bit to our specs and it works great

Unit is nice but so small its so hard to wire up. will work great for round small 14 guage wire but if you are working with underground larger wire hard to make it work. built well and priced ok.