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Using other than a wired connection to transfer signals or power. Includes optical and (ultra)sound, but most often refers to RF (Radio Frequency). Distances can be as low as centimeters (e.g. RFID); there's no upper limit.

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How can I operate two ASK RF Transmitter modules(433 MHz) simultaneously without jamming eac...

Transmitting using this transmitter seems to jam many wireless devices (possibly using the same frequency) like car keyless entry remotes, garage door openers etc. …
Adarsh Pryce's user avatar