A baby monitor system includes a transmitter unit that has a first receiver to receive baby sounds, a transmitter to transmit a signal corresponding to the baby sounds, and a transmitter housing to house the first receiver and the transmitter. The transmitter housing includes a faceplate connector. The baby monitor system also includes a receiver unit having a second receiver to receive the signal transmitted by the transmitter unit. The baby monitor system further includes a plurality of transmitter faceplates that can be interchangeably connected to the faceplate connector of the transmitter housing.