Looking for Answers about BPS 4400 Watt Back Up Power System, 8 AGM Batteries, Model# BPS4448M?

Backup Power Source provides this battery backup system that keeps you in control of your power needs. This system provides clean, instant and reliable backup power to protect your home or business from power outages. Provides 4400 running Watts (8800 surge Watts) of 120 or 240V pure sine wave power. Integrated inverter is prewired to internal AC/DC distribution center. Secures critical loads (security system, refrigeration, sump pump, heating system, lights and more) for up to 48 hours. U.S.A. Requires a licensed electrician for wiring and installation. Running Watts: 4,400, Amps: 35, Surge Watts: 8,800, Power (Volts): 120/240, Run Time (hrs.): 48, Extended Run: Yes, Flex Standby: Yes, Battery Type: 105Ah AGM, Batteries (qty.): 8, Rechargeable Battery Bank: Yes, Alternative Power Collection: Yes, requires charge controller and wind turbine and/or solar panels, Automatic Switch Back: Yes, Hardwired: Yes, Modified Sine Wave: Pure sine wave, Allows Backfeeding of Power: No, Works With Gas Generator: Yes, Solar Power Compatible: Yes, Dimensions L x W x H (in.): 34 x 15.5 x 55, Electrician Required: Yes Monitors utility power; seamlessly and automatically transfers electricity to power management system When utility power is restored, automatically transfers back and recharges battery system Works with alternative energy sources (solar, wind and hydroelectric) and/or a generator Can be used for off-grid applications Modular design allows for expansion Includes eight 12V, 105Ah maintenance-free batteries Requires a licensed electrician for wiring and installation Includes lockable UL listed enclosure