Fiat Punto sx alarm problem

[ffoc1]

Got a free punto off a mate but alarm the keeps going off and have no key to reset the thing any ideas with out unpluging the thing. cos i might make some money on the bloody thing.

[spaced]

it would help if you had the model punto, make and model of alarm, if the alarm was fitrted as standard or if it was fitted retrospectively. Generally, alarms will have a small screw or swith, allowing you to change the sensitivity. Find out the make and model of it first. Let me know.