Compatible with various remote control devices. USB cable length from receiver to transmitter: 137 cm (53.94"). Cable length from receiver to infrared emitter: 198 cm (77.95"). Power source: USB or 5V adapter. Operating voltage: 5V. Suitable for TV, set-top box, DVD, DVR, video recorder, satellite receiver, and other infrared-controlled devices. Installation instructions: 1. Use the included double-sided adhesive to mount the receiver in a suitable location. 2. Attach the infrared emitter to the device you wish to control. Note: Does not support 10-bit devices. Material: Plastic. Color: Black. Package contents: 1 x Infrared Remote Control Receiver (IR Ext). Note: Other items not included. Slight color differences may occur due to lighting and screen settings. Measurement error allowance: +/- 1-3 cm.