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Infrared Decoder Extension Cable USB Infrared Repeater suitable for decoder DV reader receiving line. "Insert the USB plug into set-top box, TV, mobile phone charger, etc. Point the transmitter (small head) to the receiving window, To remotely control STB set-top box, receiver, DVD, etc. (some devices will be marked with characters such as R, IR, IRF) Place the receiving end (large end) in a suitable position to facilitate receiving the remote control. Small size, high acceptance sensitivity, real-time remote control signal transmission without delay, strong compatibility, as long as it is placed in set-top box, DVD and other cabinets, the transponder can transmit the signal, it does not take up space and is convenient for remote control. "USB socket: the USB interface or 5V power plug of household appliances can be used, USB is only used for power. Working current: 2.7-5.5 V. Cable length from USB plug to receiver: 1.4 m. Cable length from receiver to transmitter: 2 m. Mainly used in infrared remote control products, suitable for digital TV, set-top box, IPTV, home theater, TV, DVD, DVD player, HD hard disk player, VCR, etc.