PST4-850MT120 | FrontView
PST4-850MT120 | RearView
PST4-850MT120 | LeftSideView
PST4-850MT120 | RightSideView
PST4-850MT120 | UnpackedBox
PST4-850MT120 | FeatureInfographics
This product is discontinued.

The Liebert PST4 is an offline UPS designed to provide reliable power protection for small and home office computer and network, and home entertainment equipment.


  • Surge protection & battery backup - 850VA/500W UPS with guaranteed protection of desktop computers, gaming consoles, workstations, wireless networks/routers, surveillance, and other electronics
  • Never fear an outage - Provides backup power and protection during damaging surges, spikes or power outages
  • Excellent warranty - 3 year full unit coverage including the battery with no-hassle, advanced replacement warranty
  • 8 outlets - 4 surge & 4 battery - with USB port and multiple mounting capabilities
  • TAA Compliant, RJ11/45 for data line surge protection, advanced early warning of shutdown & EMI/RFI filters


  • 2 minutes back up at full load
  • Lightning and surge protection
  • RJ11/45 for data line surge protection
  • Coax cable surge protection on 660/850VA models onlyLow Total Cost of Ownership:
  • 3 year full unit coverage with our no-hassle, advanced replacement warranty
  • Optional 1 or 3 year extended warranty

Brochures and Data Sheets

Specification Documentation