Just one little gadget pretty amazing, works great try it in your favorite electronic store TV section , there is the DIY kits also.
https://www.tvbgone.com/cfe_tvbg_main.php?PHPSESSID=272b8ccb85388ed0e7ea1cb6199d9d84
http://www.youtube.com/watch?v=EG9G0PxKa0k
http://www.youtube.com/watch?v=TKkzd6CZ-vk
https://www.tvbgone.com/cfe_tvbg_main.php?PHPSESSID=272b8ccb85388ed0e7ea1cb6199d9d84
http://www.youtube.com/watch?v=EG9G0PxKa0k
http://www.youtube.com/watch?v=TKkzd6CZ-vk