So I am looking at getting one of the IPC-B52IR-Z12E-S2 cameras to cover a chicken coop that is about 100 feet from the installation spot on my house. However I don't need or want the audio or alarms components. So my dumb question since I am new to this is can those connections just be left unconnected, just using the POE connection without any issue? If not is there a comparable camera that offers the same specs as that without the audio or alarm that only utilizes a POE connection?