Help with Optima box

As with a few other postings I've just read, I too have moved into a new house and, I too have no user manual etc for an 'Optima' Alarm. Unfortunately, I cannot find any identifying info other than Optima. I don't know if its an XM, XL or anything.

There's 6 LEDs for Zone (I think they're for zone)

LEDs for Power, Attack, Tamper and Day,

Then there's a fifteen key, keypad - and that's it.

Will the instructions for the others work? -

Can I reduce the entry/ exit time?

Can I get an installation manual?

Does this unit need servicing?

Can I get the lid off the box outside without the alarm sounding?

I've downloaded a manual for the XM but it doesn't give me much apart from turning the unit on or off.

Any help greatly appreciated

Wyresoft