Waterproof Junction Box Outdoor Cable Connector IP67 Connector External Sleeve Coupler Ø 0.2in- Ø0.4in Cable, Yocilo T-Shape Coupler for Outdoor LED Equipment (Pack of 2)

Seem robust and thought these were easy to wire up but not too sure how waterproof they are as now keeps tripping my RCD. Maybe me but will re-lay the wires when the weather gets better and see then.

Good quality, heavy construction