The PowerShield Commander UPS is designed to deliver clean power to and promote reliable electrical operation for all types of IT equipment in a network environment | The Commander protects your devices against power failures, power surges, under and over voltages that can harm your equipment or result in corrupted data | It provides cost effective and a high level of protection for sensitive electronic devices while offering options for graceful shutdown of valuable IT equipment | Works for gates, camera surveillance, computers, telephone systems, servers, and other sensitive electronic equipment | Best specifications in its class | Intelligent real time battery backup display | Smart 5 percent AVR with 2 step buck and boost | Intelligent double stage charger control which translates to a faster recharge rate | Enerator compatible | Highest joule rating 1558 joules of surge protection | All PowerShield UPS models will beep when the battery is low or failing | Usage of the Net Guard software it can email a message to let the user know that the battery is low or failing on the UPS