Audio Pro LV2 Owner's Manual page 4

ADD MORE LV2 SPEAKERS TO THE AUDIO NETWORK
You can add limitless number of LV2 speakers to your system within wireless range of transmitter.
All LV2 receiving wireless signal from transmitter using same House Code.
You can add more speakers to one room, or add speakers in several rooms
WIRELESS SOUND FROM MULTIPLE TRANSMITTERS,
HOUSE CODES 1,2 AND 3
Transmitter: House Code 1
Speakers: House Code 1
You can split the audio network in up to 3 different separate networks using House Codes. You can
then play from different sound sources (where transmitter is connected) to different pairs of LV2.
House Code switch on side of TX100
Transmitter: House Code 2
Speakers: House Code 2
Transmitter: House Code 3
Speakers: House Code 3
House Code switch on rear of speakers