Xantech Home Hidden Link Infrared Receiver (291-10) Includes: 291-00 IR Receiver and a CB12 Connecting Block. 7 Foot Cable. 3.5mm Stereo Mini Plug. Power Requirements: 12 Volts DC @ 10 mA (781C recommended). IR Modulation Frequency Bandwidth: 30  100 kHz. Dimensions: 3.25 x 1 x 2 inches.