Car Alarms: 2002 Honda Odyssey, honda odyssey, honks

Question
I have just a factory alarm and the last 3 days it has gone off in the middle of the night.  The horn honks between 6 and 10 times and then stops.  I had the battery checked and it is fine.  What could be causing the alarm to go off and how do I fix it?

Answer
Sorry, but more input is required to give you
a good answer for this issue.

I need the make & model of the alarm system
if you know it please.

Also, is it a siren and flashing parking lights,
and an LED flashing in the dash when the alarm
"goes off"?

or,

Is it the headlights flashing, a worded "security"
or "anti-theft" blinking light in the dash cluster,
and the car's own horn honking?

This info helps me determine what alarm system
(after market or OEM-factory) that you are dealing
with.

Let me know and I will see if I can help you.

ALARMTEK
CARALARMMAN.com