Because there are many infrared in the family, such as set-top boxes, , remote control fans, air conditioners, and projectors, this device can be used for centralized control and hidden control. Applies to all remote control devices Suitable for TV set, STB, DVD, DVR, , video recorder, satellite receiver, and so on The Way To achieve power: Appliance USB or 5V Supply power: 5V Note: Do not support 10! How to install: 1. Use the double-sided adhesive to stick the receiver in an perfect location. 2. Stick infrared device emitting that you want to control. Colour:Black Material:plastic+metal Size: Launch line length: 2m Receiving line length: 1.4 m Package Contents: 1 x Infrared IR Remote Extender Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.