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FLEX (protocol)
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<p>FLEX is a <a href="/facts/Communications_protocol/5uady7cB">communications protocol</a> developed by <a href="/facts/Motorola/ztqczx68">Motorola</a> and used in many <a href="/facts/Pager/aBeT40yG">pagers</a>. FLEX provides one-way communication only (from the provider to the pager device), but a related protocol called <a href="/facts/ReFLEX/DXBhLxQt">ReFLEX</a> provides two-way messaging. </p>