Iris Compatibility

Has anyone gone through and tested all the different Iris parts that Lowe’s is selling now? My understanding is that they are Z-Wave, but thought I’d ask before going and buying several parts just to have to return them later. The specific part that I’m looking at is the “Indoor Siren.”

Hoping it will work with the 2Gig setup.

http://suretydiy.com/forums/topic/lowesiris2gig-zwave/