Thanks ... the newer version of the PTZ425DB-AT.............. the PTZ425DB-AT-R looks good.
I thought I heard the -R has a quieter ptz motor?
Per Andy at Empire...
-R model with smoke glass, invisible lens, so hard to see where the camera is watching at. But less IR distance, But very quiet. Best for indoor or some place that don't want people know there is a camera here.
PTZ425DB-AT This one a little noisy, but stronger IR, so can reach far at night.
AI function they are the same.