This comes with Adjustable voltage sensitivity, Provides the ability to adapt the UPS for optimal performance in specific power environments or generator applications.Adjustable voltage-transfer points-Maximizes useful battery life by widening the input voltage window or tightening the output voltage regulation. It has Audible alarms-Actively let you know if the unit is on battery, if the battery is low or if there is an overload condition.Serial connectivity-Provides management of the UPS via a serial port.