What is the maximum height for installing an annunciator or alarm keypad per ADA regulations?

The correct maximum height for installing an annunciator or alarm keypad according to the Americans with Disabilities Act (ADA) regulations is 48 inches. This standard is established to ensure accessibility for individuals with disabilities, providing them with equal access to alarms and notifications in various settings, such as commercial buildings or public facilities.

ADA guidelines specify that operable parts of accessible elements must be within this height range to facilitate use by persons who are seated in wheelchairs or otherwise may have difficulty reaching higher installations. This standard helps accommodate a broad range of users, ensuring that critical safety features like alarm keypads can be easily accessed in emergency situations.

While the other options present various heights that may be suitable under different circumstances, the 48-inch height is explicitly detailed in ADA guidelines as the maximum for accessible elements, emphasizing the importance of compliance to promote safety and accessibility.