The replacement parts guide has a listing for the SA-525-80 that caslls it a basic 100 watt siren with a remote control head that was produced from 1989 to 1997. It goes on to say that the original SA-525-80 control head and cable assembly (part ES00032-01) is no longer available, and that you can control the SA-525-80 with a SA-326-CH control head or use a CP4182 cable and supply your own switches.