Baby monitors- can you have 2 that won't interfere with each other?

[Indith]

Having monitor issues, newborn dd is starting to go down in the evening so I swapped the monitor into our room so I could hear her. Problem is ds has night terrors and I prefer to hear him as he is starting one, plus he sometimes wakes after one rather than staying asleep. I'd really rather not have to keep checking on them both! The only time we've had 2 monitors in the house when friends stayed they have interfered with each other and we could only seem to have one on at a time. Are there any that can have more than one baby end or something?

I had one digital and one analogue and they didnt interfere with each other.

We have 2

One is in DD's room (on 2nd floor) and the other in DS' room (on the 3rd floor). The listening device for the DD's room is on the 3rd floor, and no, it doesn't interfere. It's a BT digital.

Good to know, we have an analogue one and trying to use it with another one resulted in some interesting alien type sounds!