The PS501 Power Supply is capable of powering and controlling 2 Exit Devices with the ES ElectricLatchbolt Retraction feature.This item cannot be returned since field conditions vary and wiring applications are not certified.StylePower SupplyInput120 voltsInput Circuit Protection1 amp circuit breakerOutput24 VDC, 14-18 amp surge, 2 amp at 5 volt continuous per zoneOutput Circuit Protection4 amp fuseEnclosure8" high x 8" wide x 4" deep NEMA 1 Type enclosure for indoor use with hinged cover and knockouts