When using the relay output from the LPR to trigger snapshot action from a different camera.
For this, a Safire Smart NVR is needed, for this article we're using a Safire Smart SF-NVR3104-B1 NVR and an SF-IPB585ZA-4LPR-0832 LPR camera.
Safire Smart - Setup email notification from my NVR / DVR using Gmail