The IRW Wireless Microphone System from NADY SYSTEMS features IR (infrared) light transmission technology. It is suitable for conference/meeting rooms, classrooms, houses of worship, health clubs, small auditoriums, and other medium-sized venues. Other applications include home karaoke and similar entertainment uses. The system consists of an IRW-1PA single channel portable wireless PA with built-in IR receiver, 12W amplifier and speaker, in addition to the IR microphone. This wireless microphone can be used as an alternative to RF (radio) wireless mics for situations where RF congestion or privacy issues are a concern.