... start-up of appliances2. Pure sine wave output waveform3. DC/AC isolated4. Universal protection circuit: over voltage protection, over ... . The surge power twice as rated power8. Thermal methods: cooling fans, 30% load auto. on9. One year warrantyProduct Application:1 ... cooker, refrigerator, and etc.5. House appliance devices: electric fans, vacuum cleaner, air conditioner, lighting lamps, and ect.6. ...