Intuitive LCD interface
Provides clear and accurate information in multiple languages with the ability to configure the UPS locally with easy to use navigation keys.

Predictive replace battery date
Dynamically provides the month and year when battery replacement is recommended to aide in long term maintenance planning.

Audible alarms
Provide notification of changing flywheel conditions

InfraStruXure Central compatible
Enables centralized management via APC InfraStruXure® Central.

Intelligent Battery Charging
Microprocessor controlled, 3-stage regulated charging ensures the fastest recharge times without decreasing battery life.

SmartSlot
Customize UPS capabilities with management cards.

Cold-start capable
Provides temporary battery power when the utility power is out.

Serial Connectivity
Use 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.

Resettable circuit breakers
Enables a quick recovery from overload events.

Hot-swappable batteries
Ensures clean, uninterrupted power to protected equipment while batteries are being replaced

Disconnected battery notification
Warns when a battery is not available to provide backup power.

Automatic self-test
Periodic battery self-test ensures early detection of a battery that needs to be replaced.

Automatic restart of loads after UPS shutdown
Automatically starts up the connected equipment upon the return of utility power.

Adjustable voltage-transfer points
Maximizes useful battery life by widening the input voltage window or tightening the output voltage regulation.

Adjustable voltage sensitivity
Provides the ability to adapt the UPS for optimal performance in specific power environments or generator applications.