Phoenix Contact UNO Compact UPS with Integrated Battery power storage is a compact, 24 V DC solution that provides standby power in the event of an AC mains power loss. This UPS is ideal for compact controllers, PLCs, an HMI, and other low-power devices. This low cost UPS includes an integrated 0.8Ah VRLA, Absorbed Glass Mat (AGM) lead-acid battery that allows for application temperatures from -15°C to +50°C. This AGM battery will last for up to five years. An external 24VDC power supply, such as the UNO AC to DC power supply, is required to supply input power to the UNO-UPS.