Turns out the OEM alarm I have can't be installed in my e90 325i because of the Euro DVD system
The motion sensor won't fit in the ceiling DVD holder that replaced the normal ceiling interior light module that's in all e90s.
SO...I'm selling it, to the first person that PM's me that can pay via PayPal only.
I will contact you via PM to give you my PayPal email address.
shipped anywhere within the 48 contiguous United States.
It contains everything (shown below), INCLUDING the updated siren
that solves issues when the dealer activates it.