What is a REX (Request to EXit)?
A REX (Request to Exit) is a required accessory in an access control system, which can take the form of anything from a mushroom button to an infrared sensor. In an access control system, the REX trips a relay in the panel to bypass “door forced” alarms within the access control software to avoid false alarms in the audit report. A REX can also be used to trip a relay that changes the state of an electric/electronic item from on to off, lock to unlock, or open to close.
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