Williams AV IR SY2 Small-Area Infrared System for TwoThe Williams AV IR SY2 Small Area Infrared System for Two comes with 2 receivers and a charger. Small area infrared system ideal for use as a small area assistive listening system or for private TV listening in small conference rooms, hospital rooms, assisted living facilities, medical treatment centers and or jury deliberation rooms. High efficiency LEDs display power status and audio input. Power with A C power supply or standard USB port on a TV.