Mobile Phones
Electronics Engineering
Wireless Communication

Why RF frequency uses 433 MHz?

User Avatar
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


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

wireless alarm systems.

Copyright © 2020 Multiply Media, LLC. All Rights Reserved. The material on this site can not be reproduced, distributed, transmitted, cached or otherwise used, except with prior written permission of Multiply.