As well as FM Technology, IR has some pros and cons depending on your needs. When confidentiality is needed, IR is recommended, as its signals don’t pass through walls, and/or when there is a need to use more than 6-8 languages in one room. To understand a little bit more, this technology is similar to the one used with remote controls. The transmitter, radiators and receivers should be in the line of sight to work properly.
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