... sine wave output3. Power ON-OFF switch4. Thermo control cooling fan5. Two-color indicators display power and fault ... fluorescent, incandescent, small television sets, car refrigerator, etc.Socket type: Model MKM-800W Input DC voltage 12V / 24V / ... Functioning Test: Outlook, Input voltage, Output voltage, Frequency, Socket type, Protection functions(Low battery voltage, over battery voltage, lack- ...