Really nice switch. The switching mechanism is very solid disconnecting and connecting. Firm selector switch while turning. Easy to connect up. Good waterproof structure to keep it dry inside; as long as the cable glands are tightened that is.
The disconnect tool is pretty thick, too. Can be used with a lot of different types of MC4 connectors.

I compared several options, and this generator provides the best performance for the price.

The Besino 50-ft, 30 Amp Generator Cord is built for strength and ease of use. Its sturdy twist-lock connectors and thick copper wiring make it feel dependable, especially in unpredictable weather. The blue-and-black design stands out, and the ETL certification means it’s safe for heavy-duty jobs—perfect for outdoor power when you need it.
While the set claims to be user-friendly, it does recommend professional installation, which can add to the cost. The pre-drilled inlet box is helpful for outdoor setup, but the installation might require a bit of extra skill. Still, the box’s durability and resistance to wind and rain show quality craftsmanship.
For the price, this set delivers value. It’s ideal for those who rely on generators during power outages or outdoor events, offering flexibility and robust performance. Overall, it’s a reliable investment if you’re looking for a strong, weatherproof generator cord.

This cable is very well made with good connector protection. I am not sure this is 10AWG cable; I own several 10AWG solar cables and they are all much thicker and less pliable that this one. This cable looks to me like it was built using 12AWG cabling instead. It is possible that this cable uses a thinner sheathing which may explain why it is thinner that other 10AWG cables I own however I am still concerned that there is no way for me to validate whether the correct gauge of cable was used. I have run 400 Watts (solar power) for several hours through this cable to my Solix generator and found no hot spots.

If you plan on running larger power loads through this cable I'd suggest verifying that it is indeed 10AWG. The maximum I can push through will be able 670 watts which probable wouldn't cause any issues even with a 12AWG cable.

節電に利用、電気代の節約ができる

It does what it’s suppose to do I can switch between batteries without having to change them