The detectors are that, just detectors. You can wire them into anything with suuitable inputs etc.
I would advise using a control panel to run the system and wire the beams into that. The panel type id recommend would depend on faetures required.
If just basic on off etc the id say a honeywell optima. This will also power your beams.
Then wire a relay from the bell output of the panel to trigger the lights. You can then connect a gsm dialler or normal dialler to the bell trigger, or use an accenta to get dedicated trigger outputs.