An emergency light is a lighting device with a battery backup that switches on automatically when a building experiences a power outage. Emergency lights are standard in commercial and high occupancy residential buildings, such as college dormitories. Most building codes require emergency lighting be installed in older buildings as well.
The main housing of these exit signs and emergency lights is painted black or made from a black thermoplastic.
Sealed Lead Acid (SLA)
Sealed lead acid batteries are sometimes referred to as VRLA (valve regulated lead acid) and there are two primary types AGM and Gel. We offer both AGM and Gel batteries, each has its advantages over the other depending on the specific application. SLA batteries usually last between 3 to 5 years with typical usage. The optimum operating temperature for the lead-acid battery is 25°C (77°F). Elevated temperature reduces longevity. As a guideline, every 8°C (15°F) rise in temperature cuts the battery life in half.
6 volt rechargeable batteries are a type of battery that can be recharged and used multiple times. They are commonly used for devices that require a low voltage and a high current, such as game feeders, lanterns, emergency lights, and electric signs. 6 volt rechargeable batteries have several advantages over disposable batteries, such as saving money, reducing waste, and preventing short-circuiting.
There are different types of 6 volt rechargeable batteries, such as Sealed Lead Acid (SLA)
, lithium iron phosphate (LiFePO4), nickel metal hydride (NiMH) and Nickel-Cadmium (NiCD)
. Each type has its own characteristics, such as capacity, cycle life, weight, and price. For example, SLA batteries are cheap and durable, but heavy and bulky. LiFePO4 batteries are lightweight and long-lasting, but expensive and sensitive to overcharging. NiMH batteries are eco-friendly and high-performance, but prone to self-discharge and memory effect. Depending on the application and preference, users can choose the best type of 6 volt rechargeable battery for their needs.
Remote capable exit signs or emergency lights allow the unit to add additional lighting with remote light heads without adding additional fixtures.
New York City Approved
New York City has very specific codes regarding emergency lighting and signage. In short New York City approved exit signs must be Red 8 inch tall letters with a 1 inch stroke (line thickness) as opposed to 6 inch tall with a 3/4 inch stroke in typical exit signs.
Batteries placed in cold environments can eventually fail or rupture. If your emergency lights or exit signs will be installed in temperatures below 20° F (-6° C), you may want to consider a cold weather option. Cold weather lights include a thermostatic battery heater which maintains the battery strength and lifespan in temperatures between -4° F (-20° C) and -40° F (-40° C) depending on the model you choose.
An emergency light with battery backup capability switches to emergency operation in the event of a power loss to illuminate escape routes and safety equipment.