Have you experience with using a remote propane monitor on your phone?
My thousand-gallon propane tank just ran almost dry (down to 20%) because the propane company forgot to fill it on schedule at around 30%.
I had to make an emergency call, but I'm considering adding a $15 Rochester Remote Ready (R3D) compatible level dial
And then I can connect the remote-sensing wifi hardware:
And then, on my Android or iOS mobile device, I can see the tank level in real time using an app of my choice (after making sure I paint the tank with WiFi, perhaps from a Ubiquiti bullet and cheap 14dBi antenna).
The batteries on the remote-sensing device last 2.5 years, but I can even put a thumb-sized solar charger on it, since the requirements aren't all that great.
Have any of you experience with such a thing?