... is ideal for public building,hospital,hotel,school ,etc Emergency Exit LightEmergency Led LightDescription*Injecton-molded thermoplastic ABS housing * ... switch *LED lamps are operating in normal(AC input) and emergency (DC input) MODES *Nickel-cadmium battery(4.8v 650mAh ... ) delivers more than 3hours capacity to emergency lamps *24hours recharge after 90 minuters discharge *Low voltage ...