[larryflew]

The tank level system is available with either software for use with your phone or a stand alone receiver. Also should note that the little rubber feet they give you to raise your tank enough so the sensor fits under it are a PITA. I put little 1/2 aluminum blocks in the tank holders in 3 stops to I didn't have to mess with the lost rubber blocks that go flying as you try and put your tank back in your rig after filling. Also slightly cheaper through Amazon and Feebay.