When a REX button is pressed, how long does the egress door remain open?

When a REX (Request to Exit) button is pressed, the egress door remains open for a specified duration, which in this case is 30 seconds. This timing is crucial for facilitating safe and efficient egress in emergency situations. The 30-second duration provides ample time for individuals to exit, ensuring that the door remains accessible without requiring unnecessary delays.

A shorter duration might not allow enough time for people to exit safely, particularly in crowded situations or for those with mobility challenges. Opting for 30 seconds strikes a balance between safety and security, allowing for sufficient time to exit while also ensuring the door does not remain propped open indefinitely, which could pose a security risk.

Understanding this timing helps emphasize the importance of safety protocols in electronic access control systems, illustrating how they are designed to meet both security and safety needs in a building environment.