Ours had just stopped working recently.Had been having some issues with it since new.At times would have to enter code more than once just thought it was operator issue.Since it stopped completely thought it was battery in sender.When I got it apart found battery holder cracked at solder joint.Re did solder it seams to work every time now.Maybe something to check for those having problems.Found that it works from front of camper so will mount it on inside of propane compartment door.