How high must a wall-mounted telephone alarm appliance be installed above the finished floor?

The installation height of a wall-mounted telephone alarm appliance must be no less than 36 inches above the finished floor to ensure that it is accessible to individuals, including those who may be using wheelchairs or other mobility devices. This standard height is typically aligned with accessibility guidelines, which aim to make safety and communication devices readily usable for everyone, regardless of physical stature.

Standards, such as those set forth by organizations like the Americans with Disabilities Act (ADA), emphasize the importance of placing these devices at a height that maximizes accessibility. A height lower than 36 inches may compromise usability for some individuals, while a height significantly higher than this could make it difficult for many to reach the alarm. Therefore, the requirement for a minimum of 36 inches reflects a balance between safety, accessibility, and usability.