A damp location is an interior location normally subject to dampness or condensation, or an exterior location protected from weather and not subject to saturation with water. Damp locations include over bathtubs, indoor pools, covered porches, and like locations.
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.
Emergency drivers provide constant power output to the load during emergency mode operation. Designed to be operated as NORMALLY-ON, NORMALLY-OFF or SWITCHED-LOAD. Suitable for installation inside, on-top, or in remote mount of the fixture.
Emergency light ballasts are devices that allow normal fluorescent lights to double as an emergency light by providing battery power to one or two lamps after electrical power is lost. These ballasts operate for a minimum of 90 minutes in a situation where electricity is lost, the same length of time that emergency lighting fixtures normally operate.