Connected to the shutoff valve on the propane tank is a mechanism called the propane regulator. The propane regulator does just thatregulates the flow of gas to the grill. It’s an incredibly ...

It automatically maintains your preferred temperature by cycling the burner and the built-in sensor, and the included 20-foot hose has a regulator so it can function with a 20-lb propane tank.

Case in point, the “Refuel” propane tank monitor from Wink. Though there’s also logos for Quirky and GE on the package as well, and even a picture of the guy who came up with the idea.