This radio looks like a reg maxtrac but has a small red button on the side... it is 16 channel... was a UP radio

I have a railroad maxtrac d4mja7da5ck 16pin... Does anyone know if it has special firmware or control interface like the railroad Spectra ..or what channels (freq)
c1,2,3-d1,2,3,4,5,6,7,8-f2,3,4,5,6 are...And there is a red button on the side I haven't seen on other maxtracs

Thanks