They only come with one. I never inquired about a 2nd one but I think they should be easily available. Last week I installed a similar alarm in my Ford E250 and the LCD pager that came with it is very close to the LM508's. I have a feeling I can program each alarm with the others pager but I'm afraid to try because if it works I'll be stuck with both the Busa and E250 responding off one pager.
