So you would like to keep an eye on how much gas you have left in the tank on your phone? The Mopeka Pro Check Sensor has you covered. It is a propane tank gauge that combines with your phone to show propane level with accuracy.
This sensor supports programmable alarms, so you won’t ever have to worry about running out of gas. Its battery lasts for 2 years. The device uses magnets to attach to the base of your tank.