alarms

I would like to connect this(Optima alarm) to the police ..can that be done? I got it with the property but it's all been turned off for a number of years (probably 5)I have plug in DEC phones BT).like most these days. I also have what I think is a panic alarm (see insert picture)..is it...

Hope someone can shed some light, im loooking round at alarm parts , panels etc. and i keep seeing that these items are Graded, Grade 2 , Grade 3 etc. can anyone tell me why this is and can these be mix and matched. could you have a grade 3 panel with grade 2 Pir's for instance? cheers in advance