The Hidden IR Repeater System allows you to use an existing infrared (IR) remote control to operate up to four audio/video (A/V) components located behind closed doors or walls in an entertainment cabinet or equipment closet. The built-in IR distribution technology gives you the ability to conceal, yet still control, bulky electronic equipment such as a cable or satellite TV receiver, stereo receiver or amplifier, CD player, DVD player, Blu-ray player, or virtually any component controlled by an IR signal. The system uses an IR receiver to take in the IR signals from an existing remote control and distribute those signals via IR emitters to A/V components. No more leaving cabinet doors open or struggling to remotely access your hidden equipment, you'll be able to control up to Four A/V components with extreme reliability. Specifications: Receive Frequency Range: 34 KHZ to 60KHZ Transmit Frequencies: 38 KHZ & 56KHZ 4 head IR Emitters Receive Range: 8 Meter Emitters Range: 100mm - 200mm Cord Length (IR Receiver): 3 Meter Cord Length (IR Emitters): 1 Meter AC input: 100-240V With Plug 5V USB AC Power adapter Package include: 1X IR Emitters(4 head IR Emitters) (1M) 1x IR Receiver (3M) 1X 5V USB AC Power Adapter 1x Quick-Start Guide (English)