Infrared receiver (RX106) possesses a piece of lens to focus infrared radiation on an infrared sensor where infrared signals are converted to electronic signals. After magnification, audiences can listen to their favorable language through an earphone by selecting the appropriate language channel and also can adjust the sound level too. RX106 receiver supports 6 language channels and is powered by 2 pieces of 1.5V AAA batteries. Once earphone is unplugged, RX106 will be switched off. When using with DH13A/DH18  delegate earphone, the expected lifetime of brand new batteries are about 180 hours in normal room condition.