
I just got this van breather device. As for me, I want to be able to see the level when I drive to my campsite, so the Bluetooth app is the way to go. It is very inexpensive compared to nearly $200 RV leveling system alternatives. Calibration and operation are very simple and user-friendly. It's pretty responsive. The only problem I see is that other users had a similar problem, the signal is lost when there are some walls or materials between them. For example, it had good outdoor reception of at least 20 feet, but when I put it in the van, the metal front cut the signal. So I placed it on frame A instead, which holds up well on the magma base. Then I can level the van without any problems. I wish it had a stronger signal so I can level the RV floor. That's why I gave 3 stars. It's still usable, so I'm keeping it. This is a very cheap price compared to others.

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