The Basics of Remote Control and Remote Keyless Entry

As wireless systems have become more integrated and lower in cost, more and more products are seeking a competitive edge through the addition of remote control features. Despite this wireless explosion, there is still some trepidation among product designers at the thought of undertaking a wireless design. This application note discusses the basics of remote control systems including legal and technical considerations.

Remote control is the act of controlling something from a distance. Remote Keyless Entry (RKE) is a form of remote control in which the device being controlled provides access to a secure location. A common example of this type of system is an automotive door lock. The lock on the car door is remotely controlled by a transmitter in a fob. Most systems are unidirectional (one-way or simplex); however, new generation technologies are now available for bidirectional (two-way or duplex) communication.

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