Maybe at some certain occasions you need to change the HDMI signals from DVD/Set-top box Into RF signals. Your PC/DVD/Set-top box with HDMI can play on old TV that without HDMI.You can also demonstrate your multimedia documents from your laptop to your audience through a large screen Typrojector, RF converter can easily help you to realize the conversion of HDMI signals into RF signals.<br> <br> <b>How to use this converter:</b> <br> 1,Before you buy it, please check your TV supported formats to see if it supports one of this TV formats: PAL BG/PAL l/PAL DK/NTSC M. This converter only output this formats. <br>2.With the RF cable in package ,to connect RF OUT interface and TV tuner antenna-in ,and connect the power adapter,turn on then red light on; Connect this converter to HDMI source.<br> 3.Searching the TV program can connect the converter signal(color screen)<br>4, HDMI signal into the state of green light.The TV will display the signal of the computer or other HDMI output devices.lf the TV noise, use our product with the remote control by the “SYS”key to adjust sound system ,if converter's sound system are match with TV,the sound is clear.<br> 5,Indicator light, power on and HDMI no signal into the state of red light; HDMI signal into the green light.<br> <br> <b>What's in the Package</b> <br> HDMI TO RF X1<br> RF Cable X1<br> Coaxial Connector X1<br> User Manual X1<br> Power Supply X1<br>