The Mark IV from Nichols Electronics
The MARK IV has features to help street vendors comply with local noise ordinances. First, it has an adjustable internal volume limiter, which, once set, limits the amount of sound output the unit is capable of.
The MARK IV also features an adjustable music delay control, which allows the user to control delay time before the song repeats, from 0 to 60 seconds.
This unit was designed to fulfill vendor's custom music requirements, and can be programmed with up to 60 seconds of music or any other sound vendors could require. We have a library of chime music available, or you can send us a cassette of your music.
If you wish to change the music later, the MARK IV can be reprogrammed at the factory for a nominal fee.