What are the different types of dogging mechanisms?

Dogging a push bar is when you engage the mechanism that holds the latch bolt retracted, allowing the door to swing freely without the need to press the bar or turn a lever

  1. Cylindrical Dogging - Keyed cylinder is used to engage or disengage the dogging mechanism.
  2. Hex Dogging - Allen key to control the dogging feature.
  3. Less Dogging - An exit device that does not have the dogging mechanism installed