Alarm system advice for a vintage 1964 Vespa

I've bought 3 days ago a wonderful vintage vespa (year 1964).

I want to buy a very good alarm system that can protect my vespa from:

1. Anyone who try to lift it
2. Anyone who sit on it or touch it
3. Anyone who try to cut off the alarm system

I'm also seeking an alarm system that has a pager that warn me (wherever I
am) in the exact moment the alarm alert turns on.

I'm living in California, so I would like to find a product that is
available in USA.
What do you suggest? Which is the most reliable alarmsystem that has all
the characteristics written above?

Thank you.

 

Paint it bright pink!

 

I've bought 3 days ago a wonderful vintage vespa (year 1964).

NO,NO! Paint it Celeste Green.

 

Dobermann.

 

<snip>

Er, and how many volts do you think a 1964 Vespa puts out, Edison?

 

It's six. I dunno whether you can get an alarm to sound loud and long
enough on six volts, but I doubt it. And many Vespas from that era
(certainly some sold in the US, like this one: http://www.nohoscooters.com/gs.html)
didn't have batteries anyway.

Dobermann, like I said.

 

I'd think the mercury switch would be ruined by vibration during normal
riding.

I bought one of the first commercial bike alarms in 1981. It involved a BB
in a little bowl. It ate itself within months.

I currently use a small disc brake lock with a motion-sensitive 110 db alarm
built in.

 

Those are neat bits of kit.

 

message

They also scream at the rider forgetting they're in place when he tries to
ride away....

 

Correct. I missed that.

 

Doesn't need them. If it has a rack that the lock can go across, it'll act
as a motion sensitive alarm. A hole in the bodywork could be utilised, or a
small bracket cobbled on.