Intuitive LCD interfaceProvides clear and accurate information in multiple languages with the ability to configure the UPS locally with easy to use navigation keys.Predictive replace battery dateDynamically provides the month and year when battery replacement is recommended to aide in long term maintenance planning.Green modePatent-pending operating mode that bypasses unused electrical components in good power conditions to achieve very high operating efficiency without sacrificing any protection.Energy meterProvides actual kilowatt hours of usage for energy conscious users.Outlet group controlTurn on/off, reboot or shut down select outlet groups to save dispatching technicians to remote locations (for UPSs with switched outlet groups).Sequenced shutdown and restartConfigure select outlet groups to shut down and turn on in a pre-determined order (for UPSs with switched outlet groups).Audible alarmsProvide notification of changing flywheel conditionsInfraStruXure Central compatibleEnables centralized management via APC InfraStruXure® Central.Pure sine wave output on batterySimulates utility power to provide the highest degree of compatibility for active PFC (power factor corrected) servers and sensitive electronics.Single switched outlet groupSingle outlet group that may be controlled separately from the UPS for discrete reboot of hung devices, sequenced on/off and non-critical load shedding.Wide input voltage rangeDesigned for harsh electrical environments to save battery life.Battery failure notificationProvides early-warning fault analysis on batteries enabling timely preventive maintenanceHigh online efficiencyReduces utlility costs, generates less heat.LED IndicatorsProvide easy-to-read status of your utility power conditions, UPS and battery.Cold-start capableProvides temporary battery power when the utility power is out.Serial ConnectivityUse any Home Automation network to monitor and control the S20 through its RS-232 serial port. For information on how to communicate with the S20, see APC's Application Note #102. Crestron and AMX installers should visit their respective websites for information on how to integrate the S20 into those networks.Hot-swappable batteriesEnsures clean, uninterrupted power to protected equipment while batteries are being replacedDisconnected battery notificationWarns when a battery is not available to provide backup power.Automatic self-testPeriodic battery self-test ensures early detection of a battery that needs to be replaced.Automatic restart of loads after UPS shutdownAutomatically starts up the connected equipment upon the return of utility power.Adjustable voltage-transfer pointsMaximizes useful battery life by widening the input voltage window or tightening the output voltage regulation.Adjustable voltage sensitivityProvides the ability to adapt the UPS for optimal performance in specific power environments or generator applications.Audible alarmsProvides notification of changing utility power and UPS conditions.User-replaceable batteriesIncreases availability by allowing a trained user to perform upgrades and replacements of the batteries reducing Mean Time to Repair (MTTR)USB connectivityProvides management of the UPS via a USB port (not available on all models).Serial ConnectivityProvides management of the UPS via a serial port.Temperature-compensated battery chargingProlongs battery life by regulating the charge voltage according to battery temperature.Boost and Trim Automatic Voltage Regulation (AVR)Gives higher application availability by correcting low and high voltage conditions without using the battery.Intelligent battery managementMaximizes battery performance, life, and reliability through intelligent, precision charging.Safety-agency approvedEnsures the product has been tested and approved to work safely with the connected service provider equipment and within the specified environment.Network manageableProvides remote management of the UPS over the network.Frequency and voltage regulationGives higher application availability by correcting poor frequency and voltage conditions without using the battery.Adjustable voltage sensitivityProvides the ability to adapt the Power Conditioner for optimal performance in specific power environments or generator applications.Predicitive failure notificationProvides early-warning fault analysis ensuring proactive component replacement.