It is a standalone (fruit) system. I went with a Bel STiR radar setup and the LI laser jammers because I felt that was the best of both worlds. If you are a V1/other non-escort based disciple then you would just run your preferred radar setup and the LI system as well. Two independent systems.
While they rarely go off, I feel they have paid for themselves already in the 6 months I've had them. In one case I was only car within a mile when hidden FHP lasered me and jammers saved me a $300 ticket.