I've used them to hook up garden lights and added a tube of silicone sealant to seal the inlets. Typical garden light connectors are short lived and the insulated wire becomes stiff and difficult to insert so these boxes should be replaced for longer life. The idea is 2-wire in and out and 2-wire spur, but the included free screw terminal block is designed for 3 pairs of terminals, 2 3-way terminals would be better. The garden light wire is too thick to connect 2 on one side of the junction box so I bought screw caps instead which work fine but are harder to fit in with thick wiring. Overall a success, but somehow wiring the garden lights has to be easier than that.
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