About Transmitter. Open the back cover, put in the battery and
fasten the back cover. In the transmitter there is a small hole,
put the antenna into the hole and twisting it tightly. Then try
your best to pull the antenna straight gently. There is a switch in
the place where you put the battery, you will turn on the power
(the red power indicator lighter will work) if you push down the
switch
About Receiver. Insert the earphone into the "ear" hole of the
receiver and plug your ears with earplugs. Switch the red button on
the receiver, if the "FEDECO" indicator light work, it means the
power has been opened. At this time you will hear the conversation
from the other side. Scroll the red button to adjust the voice
Remember to cut off all the power after usage. If the battery
runs out of, please screw rotation and open the cover to replace
the battery with a new one
Its frequency was locked by a special small block, so there is
no possibility to receive its transmission through other
receivers