Preinstalled Network Management Card for network-based UPS monitoring & management 1-Year Secure Network Management Card subscription included Add up to 10 external battery packs (SRT48RMBP) for extended runtime Ideal for servers, storage, voice/data networks, medical labs, and light industrial applications Rack/Tower convertible (rail kit included) Delivers clean power with zero transfer time for critical or sensitive devices Graceful shutdown of physical servers, virtual machines and HCI Clusters 1000VA/900W double-conversion on-line pure sine wave 2U rackmount UPS Energy efficient - designed to use less energy than alternative products, potentially helping you save money and reduce your carbon footprint. Helps save energy - designed to limit the energy used by other products, potentially helping you reduce your carbon footprint and save money.