{{{text_din|''Hands Free Call Settings'' parameter determines which event will trigger a call. {{{model|FMB640}}} supports four call trigger settings for each Digital Input it has:
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{{{''Hands Free Call Settings'' parameter determines which event will trigger a call. {{{model|FMB640}}} supports four call trigger settings for each Digital Input it has:
* <span style=color:#F6A83E>DIN1</span> – digital input 1 event triggers a call to user selected GSM number.
* <span style=color:#F6A83E>DIN1</span> – digital input 1 event triggers a call to user selected GSM number.