The PowerShield Commander provides temporary backup power supply, telephone and modem surge protection with a pure sine wave. Use PowerShield Commander to protect_ •Servers •Gates •Copy Machines •Laser Printers •Applications that require remote connectivity Features_ •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% AVR with 2 step buck and boost •Intelligent double stage charger control which translates to a faster recharge rate •Generator compatible •Highest Joule Rating – 1558 Joules of surge protection *Uses 2x PSB12-9 Replacement Batteries*