B80 large series self adjustable back up alarm is made for customization, with light weight and wide range mounting sizes. B80 self adjustable back up alarm is Up to 5 signal wires are optional, like reversing warning, left turn warning, right turning warning, or some other warning messages, even some music.
You could provide us the wav files have, or just some text, then we could also prepare the message.
RoHS compliant，CE certified
Mechanical drawing (mm)：
Wires/connectors optional (for two wire version):