Question about Neonate Bc-8000dv

Yes, this is possible, up to 4 cameras can be connected. According to the operating instructions, this also applies to smaller models (be sure to read which ones beforehand). However, only sound and/or images from one camera are displayed if several cameras give an "alarm" at the same time. But you can still tell by the coloured LEDs. Unfortunately, I only have one camera in use and can therefore not confirm or deny the point regarding range / interference. Since the transmitter and base do not "talk" to each other permanently, but only transmit when noises are heard or the video is switched on manually, I can imagine that with several cameras there can be short interruptions when a camera connects. However, I personally am happy to put up with this for less exposure to radiation.

Yes, that is technically possible. But the connection is then worse and there can always be connection problems!