While the unit itself has no audio inputs if the camera connected has built in audio this will be recorded. Please speak to our sales team for available cameras to suit this function.
How do you connect an IP camera to this DVR?
Firstly you will need to login to the unit , go to System -> Digital -> Channel type, then select the configuaration that supporst IP. An IP camera is then connected to this unit via it's RJ45 (lan port) using a network switch or POE switch.
Has this got a side cable exit point on the bracket?
No it does not have this feature.
Would this camera be suitable for viewing Car number plates in the dark
I'm afraid that this will not be suitable in this application.
Price per pair or single?
TT-105a is sold as a pair, Price displayed will be for a pair.