The Booster Power Supply (EBPS) is a UL 864, 9th Edition listed power supply. It is a 24 VDC filtered-regulated, and supervised unit that can easily be configured to provide additional notification appliance circuits (NACs) or auxiliary power for Mass Notification/ Emergency Communication (MNEC), as well as life safety, security, and access control applications. The EBPS contains the circuitry to monitor and charge internal or external batteries. Its steel enclosure has room for up to two 10Ah batteries. For access control-only applications, the EBPS can support batteries totaling up to 65Ah in an external enclosure. The EBPS has four Class B (convertible to two Class A) NACs. These can be activated in one or two groups from the EBPS’s unique dual input circuits. The EBPS is available in 6.5A or 10A models. Each output circuit has a capacity of three amperes; total current draw cannot exceed the unit’s rating.