IR Radiator/simultaneous interpretation 1:Auto switched on/off by carrier signals from transmission main unit IR Radiator/simultaneous interpretationModel:ZH-9001A Features:1.Radiates & distributes up to 12 channels of audio signal2.Auto switched on/off by carrier signals from transmission main unit 3.Auto gain control to ensure diodes with max. efficiency 4.Convection cooled for noiseless, ...