LPG/Propane tank monitor

Would be nice if ewelink/sonoff made a simple 12v lpg/propane tank monitor. Nearly all homes that have bulk tanks can have a gauge that gives out a 0-90 ohm reading. It would be great if sonoff made somthing similia to their electric monitoring modules for monitoring bulk gas tanks. You can buy these monitors & gas company’s will give you one for a monthly contract at a bad rate per litre.

All that is needed is an RD3-ready pick up to read the gauge & for it to be treated like an electricity monitor.

There are many thousands of these tanks all over the world with this problem.