This is an Excalibur AL-700EX car alarm. Its been sitting in a box in the closet for a long time. It is missing the remote, but you can get one on ebay for like $20-$30 bucks. It uses this type of remote (you can search for "H5LAL789D"):

http://cgi.ebay.com/ebaymotors/_Car-...4506.m20.l1116

It has shock sensor and sound sensor. I believe the control unit will "chirp" but not sure about flashing lights or unlocking doors. It can also be programmed to arm automatically. The schematic is on the back so you know how to hook it up.

How much? How does $10 sound. I figure the horn must be worth at least that much. Must be willing to meet me in Union City area. I will also ship it if you pay shipping.