| Model | STW-500VA STW-1000VA | STW-1500VA STW-2000VA | STW-3000VA STW-5000VA | STW-8000VA STW-10000VA | STW-12000VA/15000VA/ 20000VA |
| Power Capacity | 500VA/1000VA | 1500VA/2000VA | 3000VA/5000VA | 8000VA/10000VA | 12000VA/15000VA/20000VA |
| Technology | Zero Cross Switching Techonology+Digial CPU Control Circuit | ||||
| Transformer | Toroidal Transformer | ||||
| Input Voltage | 140-260Vac/100-260Vac,50/60Hz | ||||
| Output Voltage | 220Vac,±8%1220Vac,±10% | ||||
| Delay Time | 6s/180s | ||||
| Efficiency | 98% | ||||
| Phase | Single Phase | ||||
| Display | LED Digital Display | ||||
| Cooling | Fan Startup at 65℃(for 3000VA and above) | ||||
| Protection | High Voltage,High Temperature,Short Circuit,Overload,Low Voltage(Optional) | ||||
| Safety Standard | CE(LVD+EMC) | ||||
| Unit Weight/N.W. | 3.0kgs/3.7kgs | 4.5kgs/5.2kgs | 8.6kgs/11.0kgs | 15.8kgs/17.4kgs | 22.1kgs/26.5kgs/31.3kgs |
| Giftbox Size(mm) | 248*208*167 | 298*208*167 | 475*330*195 | 440*340*270 | 565*420*340 |
| Carton Size(mm) | 516*228*360(4) | 480*300*390(4) | / | / | / |