Consider choosing:
SavvyLevel S4 alone:choose this if you're installing internally and have all the necessary installation parts for wiring.

How can I know that I can internally mount it?

1. I have a fiberglass or composite Caravan, or
2. I have a Motorhome, or
3. I have a tunnel boot at the front with a plastic door (mount in tunnel boot).

Experience the freedom of effortless leveling and embark on memorable RV journeys with SavvyLevel.

Please note:

If you choose afterpay, enter your details first; you can select afterpay as a payment option in the next screen.

As seen on GoRV for their exclusive review.