What is the required candela level for a visual alarm device in a sleeping room on the ceiling?

The required candela level for a visual alarm device in a sleeping room is specified at 177 candela. This standard is established to ensure that the visual alerts are adequately bright to effectively capture the attention of occupants, even in the low light conditions typically found in a sleeping environment.

The 177 cd intensity ensures that the alarm can be seen quickly and effectively regardless of factors such as ambient light or individual visual acuity. This level is specifically chosen to guarantee that those who are sleeping will have a higher chance of waking up in the event of an emergency alert, thereby significantly increasing their safety.

While other candela levels may be applicable in different types of rooms or for various applications, 177 cd is specifically designated for sleeping areas to maximize visibility and ensure optimal performance of the alarm system when it is most needed.