Instant-on Zeus Power Systems go where traditional gas generators can't! No Gas! No Fumes! No Noise! Grid-tied, Off-grid, and/or Portable Residential, Commercial, Industrial & Government Applicable Invented, Designed & Manufactured by Americans. Stand-alone, Grid-interactive, and/or Portable/Remote Readily available Instant-on emergency backup power Automatic transfer switch provides instant power when your utility connection fails Instant-on ZPS ensures operating reliability and surge/spike protection Meet/Exceed your accreditation and liability requirements with ZPS units Some ZPS systems have programmable (auto-start) generator relays to charge batteries and pass-through power during extended power outages. Saves wear and tear as well as fuel on your gas generator Expandable design.