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.