There are some different feature between Smart UPS On-Line SURT and SRT.
You may refer to the generation comparison as below.
| Feature | Smart UPS RT (SURT) | Smart UPS SRT |
| Double Conversion On-Line Topology | X | X |
| Rack Tower Convertible | X | X |
| Smart Slot | X | X |
| +/- 1% Output Voltage Regulation | X | X |
| Automatic Bypass | X | X |
| Hot Swap User Replaceable Batteries | X | X |
| Dual Input SURT : 15kVA & 10kVA 230V only SRT: 8kVA & 10kVA 230V only | X | X |
| Auto Detect External Battery Packs | X | |
| Predictive Replacement Battery Date | X | |
| Multi color Graphical LCD | X | |
| Unity Output Power Factor (6kVA-10kVA Models) | X | |
| Start Without Battery | X | |
| Energy Star (208 models) and Green Mode | X | |
| Switched Outlet Groups | X |
Released for: Schneider Electric Thailand

