Emergency power supplies with batteries in 19'' 2U rack format. Main functions: Accepts load currents from 40 to 150 A Monitors battery presence and impedance (aging) Protects the battery from temperature variations Alarm reports on dry contacts Benefits of the SONaes range: Up to 6 amplifier and 3 auxiliary independent fuse-protected outputs All connectors are pluggable Fully protected product, with rear connectors Built-in lightning protection