Four ways of optical fiber signal input split or switch to two sets of SPDIF signal receiving the device.Support signal retiming.Used optical fiber cable loss less the 0.2Db/m, Output distance is up to 40m.The input control can through R/M and also can directly press the button.Support last time working state memory when power off NsendatoAudio Switch boxOver-voltage protection can prevent the damage caused by connecting the unmatched power adapter to the machine if the light for standby indication flashed, it shows that the output voltage from the power adaptor is too high and the adaptor needs to be changed.LED status indication, it can tell us the working state of the device .Supporting audio : for DTS-HD/-trueHD/LPCM2.0/DTS/-AC3/DSDMax rate: 16MbpsOutput cable distance: up to 40m(Use the optical fiber cable loss less the 0.2Db/m )Max working current: 100mAInput:AC (50HZ, 60HZ) 100V-240VOutput:DC5V/500mAOperating Temperature range: 0 to 40 degrees CelsiusOperating Humidity range: 5 to 90%RH (No Condensation)Dimension: 67 x 128 x 32mm/ 2.68 x 5.04 x 1.34inch (L x W x H)Weight: 185g/ 0.41lbPlug Type :EU Plug,it applies to Indonesia, , , , and so on.Colour:blackMaterial:MetalSize:12.8 x 6.7 x 3.2cm Package Contents:1 x Audio Switch Box 4X21 x Remote Control1 AdapterOnly the above package content, other products are not included.Note: Light reflection and different displays may cause the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.