Copy a Prastel remote to RMC-255CHML via HCD-900 

You can test the frequency to see if there is any interfering signal around. If the frequency is very unstable and the frequency changes a lot, it means there is a interfering signal around. In the last part of my video, I use RMC-255CHML to transmit interfering signal so you are not able to correctly read the frequency of the Prastel.
If there is a interfering signal around you, please try to change a location in order to operate HCD-900 without any problem.
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