You know how it goes - you're camping and realize the furnace won't blow heat or the stove won't fire up. OMG! You're out of propane! How did THAT happen!?!? How could you possibly have known? Well, if you had the Mopeka LP Tank Check Sensor from AP Products, you COULD have known! In this video, we'll give you a quick run-down of the product, how it works and how much you can trust the data it provides.