QUOTE(bryanc @ Mar 23 2014, 12:42 AM)

Car Alarm. The chip (LM2902) is dated 9248 (48th week of 1992).... The rubber band looking thing is probably a vibration sensor.
I doubt it is an alarm.
There aren't enough connections.
Car alarms have lots of pins typically on a header to sense and control things.
Plus the LM2902 is an op amp, a simple amplifier, not any sort of microcontroller.
I'm with dangrouche in that it is just the motion sensor
for alarm that is/was somewhere else.
--- bill