1Over-voltage protection can prevent the damage caused by connecting unmatched power adapter to the machine. 2Three ways of optical fiber signals switch to one sets of SPDIF/ for TosLink signal receiving device. 3o format support LPCM2.0/DTS/DolbyAC3. Support signal retiming. 4Used optical fiber cable loss less the 0.2Db/m, Output distance is up to 40m / 131.2ft. 5The input control can through R/M and also can directly press the button. Support last time working state memory when power off. 6Support LED status indication. Reduce signal loss, get a better output signal. Item Type: 3x1 Switcher Material: Iron Shell Color: As shown in the picture Support o Format: LPCM2.0 / DTS / Dolby-AC3 Peak Wavelength: 650nm Maximum Baud Rate: 16Mbps Output Cable Distance: 40m / 131.2ft(use optical cable with less loss 0.2Db/m) Maximum Working Current: 100mA Power adapter format: Input: AC (50HZ, 60HZ) 100V-240V; Output: DC5V / 1000mA Operating Temperature Range: 0~+40 Operating Humidity Range.: 5~90%RH (non-condensing) Remote Control Battery: 1 x CR2025 battery(Included) Voltage: 100V-240V How to Use: Plug and play 1 x Remote Control 1 x Instruction Manual 1 x Fiber Optic o Cable 1 x Power Adapter 1 x 3x1 Switcher