FCI P24110-FC Category : FCI Although this alarm has 4 wire terminals, I believe that it is still a two-wire alarm. This alarm is part of the SpectrAlert series. Brand FCIModel P24110-FCManufacturer System SensorType Alarm (Horn/Strobe)
Simplex 2901-9833 Category : SimplexI have several of these horns because I’ve had several of them unexpectedly break on me.
National Time SG-C3HSZ Category : National TimeThis is the equivalent of a Gentex Commander 3 horn/strobe.
