By the nature of the device, an emergency light is designed to come on when the power goes out. Every model, therefore, requires some sort of a battery or generator system that could provide electricity to the lights during a blackout. The earliest models were incandescent light bulbs which could dimly light an area during a blackout and perhaps provide enough light to solve the power problem or evacuate the building. It was quickly realized, however, that a more focused, brighter, and longer-lasting light was needed. The modern emergency floodlight provides a high-lumen, wide-coverage light that can illuminate an area quite well. Some lights are halogen, and provide a light source and intensity similar to that of an automobile headlight.
Early battery backup systems were huge, dwarfing the size of the lights for which they provided power. The systems normally used lead acid batteries to store a full 120-volt charge. For comparison, an automobile uses a single lead acid battery as part of the ignition system. Simple transistor or relay technology was used to switch on the lights and battery supply in the event of a power failure. The size of these units, as well as the weight and cost, made them relatively rare installations. As technology developed further, the voltage requirements for lights dropped, and subsequently the size of the batteries was reduced as well. Modern lights are only as large as the bulbs themselves - the battery fits quite well in the base of the fixture.
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Here are all the products in this category:
Exit Sign - 10 Year Tritium Self-Luminous
2B10YEAR is specifically constructed to resist tampering and vandalism. Whenever you have to specify exit signs for an explosive, corrosive, wet or other harsh environment, 2B10YEAR is the sign of choice
$ 169.95
Exit Sign - 20 Year Tritium Self Luminous
2B20YEAR is specifically constructed to resist tampering and vandalism. Whenever you have to specify exit signs for an explosive, corrosive, wet or other harsh environment, 2B20YEAR is the sign of choice
$ 199.95
Lithonia ELM Quick-Mount® Emergency Lighting Units
Provides a minimum of 90 minutes of illumination for the rated wattage upon loss of AC power. Ideal for applications requiring attractive unit equipment with quick installation. White, compact, low-profile contemporary design with high-impact thermoplastic housing that is impact-resistant, corrosion-proof and UV-stable to resist discoloration from artificial light sources or sunlight. Maintenance-free lead-calcium battery. Two 5.4W wedge-based krypton lamps offer 32 percent more light output than standard incandescent lamps. Dual-voltage input capability (120/277V). Edge connectors on printed circuit board ensure long-term durability. Universal J-box mounting pattern. Tool-less access for maintenance. Flexible conduit entry provis
$ 60.95
Lithonia ELM2 Quick-Mount® Emergency Lighting Units
Provides a minimum of 90 minutes of illumination for the rated wattage upon loss of AC power. Ideal for applications requiring attractive unit equipment with quick installation. White, compact, low-profile contemporary design with high-impact thermoplastic housing that is impact-resistant, corrosion-proof and UV-stable to resist discoloration from artificial light sources or sunlight. Maintenance-free lead-calcium battery. Two 5.4W wedge-based krypton lamps offer 32 percent more light output than standard incandescent lamps. Patented MR24, multi-faceted reflector (ELM2) significantly improves photometric performance; 60 to 100 percent more light delivered to the path of egress. Dual-voltage input capability (120/277V). Edge connec
$ 69.95
Lithonia ELM618 High Capacity Adjustable Emergency Lighting Units
Intended Use: Provides a minimum of 90 minutes of illumination for the rated wattage upon loss of AC power. Ideal for applications requiring attractive unit equipment with quick installation. Features: White, compact, low-profile contemporary design with high-impact thermoplastic housing that is impact-resistant, corrosion-proof, UV-stable to resist discoloration from artificial light sources or sunlight. Maintenance-free lead-calcium battery (standard). Two 9W wedge-based krypton lamps offer 48 percent more light output than standard incandescent lamps. Patented MR24, multi-faceted reflector significantly improves photometric performance; 60 to 100 percent more light delivered to the path of egress. Universal voltage input capabi
$ 127.95
Lithonia LHQM Green LED Exit-Unit Combo Fixture
Intended Use: Ideal for applications requiring attractive, quick installation exit signs and low energy consumption. Features: Precision-molded thermoplastic housing is impact and scratch resistant, corrosion proof and UV-stabilized to resist discoloration. Innovative snap-together design allows installation in less than three minutes. Long-life LEDs feature very low energy consumption and rated life up to 25 years. Consumes less than one watt of energy. Fully assembled single-face exit with optional extra faceplate for easy field conversion to double face. Replaceable chevron directional indicator knockouts for choice of direction. Universal mounting capability – top, back or end (canopy provided). Automatic recharge after discha
$ 243.95
Lithonia LHQM Red LED Exit-Unit Combo Fixture
Intended Use: Ideal for applications requiring attractive, quick installation exit signs and low energy consumption. Features: Precision-molded thermoplastic housing is impact and scratch resistant, corrosion proof and UV-stabilized to resist discoloration. Innovative snap-together design allows installation in less than three minutes. Long-life LEDs feature very low energy consumption and rated life up to 25 years. Consumes less than one watt of energy. Fully assembled single-face exit with optional extra faceplate for easy field conversion to double face. Replaceable chevron directional indicator knockouts for choice of direction. Universal mounting capability – top, back or end (canopy provided). Automatic recharge after discha
$ 225.95
