The MV121 Appello user recordable horn alarm sounder enables the recording of any type of content such as voice or music that can be played back at CD quality. This content can be reproduced repeatedly, alternating with or without one of the built-in 45 alarm tones. Voice/Music output of up to 112dB(A) at 1 metre and alarm tone notifications output up to 126dB(A) at 1 metre.

For multiple unit installations the recording process is only required once to create a master unit which can then be used to program all other MV121 units on the system, guaranteeing synchronisation during playback, using the supplied ’Synch’ cable.