I have a customer that wants to add to his existing nvr setup. Model NVR302A - 16/16P -4KS2. Looks like it is made by ENS or dahua. He is stuck on using this system. He wants a good dahua turret or dome cam in a steril room in a pharmacy where meds are mixed. He needs 2 way audio and ability to zoom in on various chemicals used by pharmacists directly below the cam. He even wants the ability to read some of the labels if he needs to. The camera will be positioned above the workspace within 8 feet of the workers. Any suggestions on a dahua that would meet this requirement? Thanks for the input guys.