 
    | Key features:��High frequency Modified Sine Wave ��Power inverter with Charger ��Auto Transfer between AC and DC Mode ��Transfer time < 10Ms( Normal 8Ms) ��Charger 8-10Amp ��OFF Charge Function ��wide input range: 90-280V narrow input range 165-275, selectable ��PROTECTION: Over Load / Over Voltage /Low Voltage /Battery Low / Short Circuit ��reverse DC polarity Protection ��LED display and Alarm function ��plastic cabinet, light and small |  | 
Technical Specifications
 
| ITEM | QNHF 500 | QNHF1000 | QNHF 2000 | |
| CAPACITY | VA/W | 500VA / 300W | 1000VA / 600W | 2000VA / 1280W | 
| INPUT | Phase | Single | ||
| Voltage | 110 / 120VAC or 220 / 230 / 240VAC | |||
|   | 90 - 145VAC or 170-280VAC (  | |||
| 50-145VAC / 90-280VAC (  | ||||
| OUTPUT | Phase | Single | ||
| Voltage | 120VAC or 230VAC | |||
| Voltage Regulation | 10% -- 18%(Batt. Mode) | |||
| Frequency | 50Hz or 60Hz | |||
| Frequency Regulation | 0.1 Hz (Batt. Mode) | |||
| Output Waveform | Modified Sine wave (Batt. Mode) | |||
| POWER FACTOR | P.F. | 0.6 | ||
|   | Charger Current | 8 Amp + / - 1Amp | 6 Amp + / - 1Amp | 10 Amp + / - 1Amp | 
| Floating | 13.7V + / - 0.2V | 13.7V+/-0.2V or 27.4V+/- 0.4V | 27.4V+/- 0.4V | |
| Voltage | ||||
| Overcharge | 4.5V +/- 0.3V charger stops and fault | 29V +/- 0.6V or 14.5V +/- 0.3V charger stops and fault | 29V +/- 0.6V charger stops and fault | |
| Protection | ||||
| TRANSFER TIME | Typical | 8ms (Narrow mode) | ||
| EFFICIENCY | AC to AC | >95% | ||
| DC to AC | >80% | |||
| INDICATOR | AC Mode | Green LED lighting | ||
|   | Yellow LED lighting | |||
|   | Green LED flashing every 2 seconds | |||
| Charging Mode | ||||
| Overload | Red LED flashing every 0.5 second | |||
| Fault | Red LED lighting | |||
| AUDIBLE ALARM | Low  | Sounding every 2 seconds | ||
| Overload | Sounding every 0.5 second | |||
| Fault | Continuously sounding | |||
| PROTECTION | Deep Discharge, Overcharge, Overload protection, Short Circuit, Battery Shot, Over Voltage and Under Voltage | |||
| Product size | mm | 224 X 255 X 80 | ||
| product weight | kg | 1.97 | 1.9 | 2.2 | 
| Carton size | mm | 410*345*  | ||
| Carton weight | kg | 12.84 | 16.11/13.71 | 16.83 |