| Model | 500VA | 1000VA | 2KVA |
| Topology | Double conversion, on-line UPS | Double conversion, on-line UPS | Double conversion, on-line UPS |
| Control | Micro-controlled | Micro-controlled | Micro-controlled |
| Input / voltage | 196/265 VAC | 196/265 VAC | 185/265 VAC |
| Input / frequency | 45/65Hz | 45/65Hz | 45/65Hz |
| Output / voltage | 220/230 VAC +/-2% | 220/230 VAC +/-2% | 220/230 VAC +/-2% |
| Output / frequency | 50/60Hz +/-0.5% | 50/60Hz +/-0.5% | 50/60Hz +/-0.5% |
| Output / power | 500VA/300W | 1000VA/650W | 2000VA/1200W |
| Output / crest factor | 3:1 maximum | 3:1 maximum | 3:1 maximum |
| Output / protections | Inherent pulse-by pulse current limiting | Inherent pulse-by pulse current limiting | Inherent pulse-by pulse current limiting |
| Output / waveshape | Pure sinusoidal | Pure sinusoidal | Pure sinusoidal |
| Output / THD | 2% max. for linear load | 2% max. for linear load | 2% max. for linear load |
| Output / efficiency | 77%DC/AC 65%AC/AC | 83%DC/AC 72%AC/AC | 86%DC/AC 78%AC/AC |
| General / back-up time | 10 minutes @ full load (typical), 25 minutes @ half load (typical) | 10 minutes @ full load (typical), 25 minutes @ half load (typical) | 10 minutes @ full load (typical), 25 minutes @ half load (typical) |
| General / charging time of batteries | 3 hours | 3 hours | 3 hours |
| General / indications | Output load/ battery capacity via bar-graph, 5 LEDS for general status of the UPS, audio alarm for line-failure and low-battery indications, "alarm" interface-fully isolated, provides line status, low battery, UPS, shutdown command from computer, RS232 terminal for connection with a PC | Output load/ battery capacity via bar-graph, 5 LEDS for general status of the UPS, audio alarm for line-failure and low-battery indications, "alarm" interface-fully isolated, provides line status, low battery, UPS, shutdown command from computer, RS232 terminal for connection with a PC | Output load/ battery capacity via bar-graph, 5 LEDS for general status of the UPS, audio alarm for line-failure and low-battery indications, "alarm" interface-fully isolated, provides line status, low battery, UPS, shutdown command from computer, RS232 terminal for connection with a PC |
| General / battery check | Automatic every 200 hrs.; manually by "BATT. TEST" button | Automatic every 200 hrs.; manually by "BATT. TEST" button | Automatic every 200 hrs.; manually by "BATT. TEST" button |
| General / EMC | EN55022-A, IEC 801-2-3-4, EN50082-1 certified | EN55022-A, IEC 801-2-3-4, EN50082-1 certified | EN55022-A, IEC 801-2-3-4, EN50082-1 certified |
| General / safety | IEC 950 (EN60950) certified | IEC 950 (EN60950) certified | IEC 950 (EN60950) certified |
| General / batteries | Sealed, lead-acid maintenance-free type, 2 x 12V/6AH | Sealed, lead-acid maintenance-free type, 4 x 12V/5AH | Sealed, lead-acid maintenance-free type, 8 x 12V/5AH |
| General / acoustic noise | |