My 6-year old T-Cell-15 is dead. I ordered a T-Cell-3 on the internet. Although the web site indicted it would work with my system, the instructions that came with the cell indicate that it is not compatible with systems older than 2009 or with software versions lower than 1.5. Is my system so old that I need to replace the control panel too? Or should I order a newer PCB for my control panel? My panel software version is AL 1.33. Or is there an available cell that will work with what I have?