Originally Posted by corfire
The Crossfire wasn't originally set up to have a lock/unlock 'chirp' or tone. However, if you are a bit handy, you can get one for about $5 by following the link to my old thread.
https://www.crossfireforum.org/forum...lert-tone.html
Also, several members have been able to get the chirp by replacing the alarm siren with a new one (different part number) as indicated in this thread. That process does appear to be getting expensive.