Mobile Phones
Electronics Engineering
Wireless Communication

Why RF frequency uses 433 MHz?

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Wiki User
2011-01-20 15:51:03

433MHz (433.92MHz in fact) is the most used frequency on earth.

It's a free use unprotected Short Range Devices frequency used by a

lot of devices.

To name a few, car keys, door openers, external wireless

thermometers

and pressure sensing devices, radio ham TV,... and

wireless alarm systems.


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