D.L.
We have the same situation - our kids are all upstairs and on the other side of our house from our room (our room is downstairs). I tried it,and it didn't work with the evenflo monitors that I bought so we ended up plugging in all of the receivers. Now we just use one monitor because I found that,since their rooms are next to each other, I can hear everything that I need to hear even if the monitor isn't in the crying childs room (I still hear them in the middle of the night when the others cry). It also works well if you leave all the doors open a little and put the monitor in the hallway next to their rooms. The monitors that we had were excellent 900 mhz and I could even get reception at my neighbors house, but I don't think they are on the market anymore (called evenflo tria).