Generally speaking, an exit device is a term used for panic hardware, whether a panic device or fire exit hardware. It is characterized by an actuating mechanism that spans at least half the width of the door. It may be of the touchpad, crossbar, or recessed style. Note, that In order to be considered code-compliant, the length of the touchpad or crossbar must be at least half the width of the door, anything less than half the width of the door is not code-compliant.
Panic Hardware definition: Panic Hardware is an exit device that is certified and tested meeting all the test standard requirements of the UL 305 – Panic Hardware. For i.e. one of the major requirements is that t