Monarch
Monarch is now a Falcon company that is owned by Allegion that manufactures panic bars, exit devices, dogging kits, and parts. Their rim and vertical rod devices are designed to meet high traffic needs in a variety of finishes to match any hardware.
As used in exit devices, a mechanism that fastens the cross bar in the fully depressed position, and also retains the latch bolt or bolts in a retracted position, thus permitting free operation of the door from either side. Locking or unlocking by hex key (Dogging Key)