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With this regulator, you will not get caught running out of propane.

After all these years of RVing one can still learn something new. I never knew my regulator did that and thought it was only an indicator of propane or no propane. If I used it the way it is intended I know that I would surely get lazy and end up running out completely, however it is nice to know. Thanks, Rv (that's how I sign things)

I invested in a Truma tester. Best thing ever for lazy people: press it against the tank - green light, you have gas at that level / red light, nope ( https://shop.truma.net/collections/home/products/truma-levelcheck )