hiya, I have 2 cameras along the front axis of my house, one has a microphone, the other does not, is it possible to trigger a microphone recording start event if either of the two cameras are motion triggered?

Yes, it is possible to do it but as this is not related to software development with the MIP SDK, which is the focus of this forum, please ask again in the support community, you should get better help from the partners using the support community.

https://supportcommunity.milestonesys.com