Replacement or additional speaker for use with the AEB2 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 AEB4 into an AEB2.
If you need the entire AEB2 assembly (with amplifier PCB and cable) it is available here.