Examples of notification appliances include:

Notification appliances are devices specifically designed to alert individuals to an emergency situation, such as a fire. These appliances can provide visual or audible signals to warn occupants of the presence of danger or the need for immediate action.

Bells, horns, and strobe lights are classic examples of notification appliances because they produce loud sounds or bright flashes of light that can capture attention and prompt a response during an emergency. These devices are commonly used in fire alarm systems to ensure that all occupants are aware of an emergency, even those who may be hard of hearing or unable to see.

In contrast, the other options do not serve as immediate notification appliances in the same capacity. Computers and televisions can provide information but are not specifically designed to alert for emergencies. Posters and flyers serve informational purposes but do not actively notify individuals during an emergency. Emails and messages can be part of communication strategies but are not instant alert systems like bells, horns, and strobe lights. Thus, the selection of bells, horns, and strobe lights represents the essential nature of notification appliances in emergency situations.