HSTYAIG External Electric Junction Box Outdoor Waterproof IP68, 3-Way Plug Line External Electric Power Cord Boxes, M20 Coaxial Cable Connector Wire Range Ø3~12mm(0.12~0.26") - Amazon.com
CNBTR Outdoor Underwater Junction Box 3 Way Cable Wire Connector ion Gland Electrical with 3 Terminal - Amazon.com
IP66 Waterproof Junction Boxes, 3 Way Cable Connector with Terminals Strip, Screw and PG9 Waterproof Vonnector for Indoor and Outdoor 4-8 mm Cables (White) - Walmart.com
Indoor/Outdoor 4 Wire Junction Box With Connector (215JUNCTION-L) - Action Lighting™, Inc.
Halex 1/2 in. Service Entrance (SE) Water tight Conduit Connector 90661 - The Home Depot
IP66 Waterproof Junction Box 2 Way 3 Way 3mm-6.5mm
Indoor/Outdoor 3 Wire Junction Box With Connector (215JUNCTION-S) - Action Lighting™, Inc.
Outdoor waterproof plastic junction box terminal one in three out 130*80*70mm sealed box - AliExpress
1/2" BOX-TO-BOX CONNECTOR
200*120*75mm 1 Inlet 4 Outlet t waterproof junction box 45A 10 bit
FX Junction Box Waterproof IP68 2 Way Plug Line M20 Coaxial Cable Connector Wire Range 5 to 12mm Outdoor External Electric Power Cord Boxes: Amazon.com: Tools & Home Improvement