Replacement or additional speaker for use with the AEB4 Amplified External Beeper unit.  Additional speakers can be mounted in each of your avionics bays, and a single amplifier board and cable from an AEB2 or AEB4 can be shared among the bays.  Also allows you to convert an AEB2 into an AEB4.

If you need the entire AEB4 assembly (with amplifier PCB and cable) it is available here.