Hi. Thanks for the add. I have been lurking and learning for a while, with nothing constructive to add to the group. Between this and the BI group and training videos, I have found choosing security is not always simple. My neighbour just completed and moved into a new house that replaces one lost to fire 2 years ago. He purchased a Lorex LHV5100 series, 4 camera package from Costco and pre-wired the house. I believe the system is analog on BNC siamese wiring. I'm looking to get him a front door camera with 2way audio compatible with his system. Any suggestions? I already discouraged him from a wifi 'doorbell' cam since the wiring is already in the soffit.