An emergency-light is an electric battery-backed light device that automatically turns on when a room suffers a power cut. The invention of this simple and effective emergency-light was one that helped to reduce losses in the electrical company in the years before bushfires devastated the country. Emergency lights available at have been standard in most new high occupancy residential and commercial buildings, including apartment complexes, dormitories, and hotels. They may be manually turned on or may be automatically linked to a motion detector, which also automatically lights the way.


The invention of the emergency-light system changed the way lighting worked in a number of ways. It eliminated the hazards of flammable liquids and gases being inadvertently lit by human error or equipment malfunction. It also eliminated the need for employees to signal to each other when emergency lights go out. This prevented any delay in getting help that might otherwise be caused by confusion about when to activate emergency lights. Also, because all emergency-light systems automatically turn on when room temperature, there is no need to worry about leaving lights on in the cold even when there is no electricity.

While the emergency-light system had many advantages, it also had some drawbacks. One major problem was that the emergency-light did not provide adequate lighting when rooms were warmer than room temperature. Also, the emergency-light system did require connection to a power source and often required a transfer of power from the emergency-light to the building’s power supply during non-peak hours. These two factors added to the costs of operating the emergency-light system, and in some cases increased the operating costs of the building. To eliminate these problems, the American Society of Home Inspectors developed the National Fire Protection Association (NFPA) standards for emergency-light and called for mandatory flame detection and notification requirements.

The new standards set a minimum required brightness level and specified the maximum candlepower of emergency-light systems that can be installed in residential buildings. For this purpose, an emergency-light system is classified according to its light intensity and candlepower output. Residential buildings are classified according to the average candlepower per square foot, which is the norm for indoor lighting. NFPA recommends that the minimum required candlepower output of an emergency-light system is no less than one thousand candlepower, while the maximum should be no less than thirty thousand candlepower. The maximum and minimum candlepower ratings are intended for emergency-light applications only, and not for regular lighting.

Another important provision of the new NFPA standards is that an emergency-light system should be monitored at least twice a day, and at all times when lighting is required. This is accomplished with a monitoring device such as a Digital Emergency Clock or Digital Emergency Locator (DIFL). The device is designed to contact a designated central station if the building’s emergency-light system is not responding as it should. The system is also designed to automatically send an audible or visual alarm to a household, apartment, or business when an emergency-light problem occurs. A manual reset feature allows the system to be reset to respond to emergencies without initiating a power outage, and a power backup battery backup helps to ensure that the emergency-light system does not go out during a critical period of time.

Installing an emergency-light system is the best way to ensure the safety and security of a building or other structure. It is important to keep in mind that even though it may seem difficult to prepare for disasters, planning for such events beforehand can help make emergency preparedness a more manageable task. By taking the time to plan ahead, every member of a structure’s crew can be sure that emergency-light installation and operation will go smoothly and without any problems.