OMNITRONIC MOM-10BT4 Audio Link Module is a transmitter module for retrofitting MOM-10BT4 modular PA systems. It provides wireless audio transmission to MOM-10BT4 receiving units in audio link mode and supports mono or stereo-right transmission from the master. The module offers 16 selectable UHF frequencies across 823–832 MHz and 863–865 MHz, a detachable BNC antenna, up to 30 m line-of-sight range, 10 mW RF output power, frequency and level controls, and power and signal status LEDs.