What is the AV output difference between PT31x2 and PZ61x2?
For PZ, AV output is for two-way audio. The camera supports a built-in microphone or an external microphone and speakers. You can also connect a microphone and speakers to the client side, such as to a PC or a notebook. For PT, the AV output is for audio and video. You can use an AV cable to connect the PT camera with a PC or a monitor.