SUA500PDRI-S Features\nAPC DIN Rail - Panel Mount UPS with Standard Battery 500VA 230V\nProven Industrial UPS power protection for control applications and harsh environments.\nIncludes: CD with software, Documentation CD, Installation guide, Smart UPS signalling RS-232 cable\n\nUser-replaceable batteries\nIncreases availability by allowing a trained user to perform upgrades and replacements of the batteries reducing Mean Time to Repair (MTTR)\n\nMultiple mounting methods\nAllows for standardization on one product for use in different environments.\nPlug-and-Play external batteries\nEnsures clean, uninterrupted power to the loads when adding extra runtime to the UPS.\nFlexible Design\nAvailable in a wide range of configurations to suit any operating environment\n\n- Automatically starts up the connected equipment upon the return of utility power\n- Designed for harsh electrical environments to save battery life\n- Protects connected loads from surges, spikes, lightning, and other power disturbances