Samlex SA-1500-124 Pure Sine Wave Inverter 24 VDC, 1500 Watts 24 Volt, 1500W Continuous Output Power, 2000W Surge Output Power Isolated input and output, Thermostatically controlled cooling fan, Advanced microprocessor design Switch selectable output voltage: 100/110/115/120 VAC, Switch selectable output frequency: 50/60 Hz Protections: overload/short circuit, reverse polarity (fuse), over/under input voltage, over temperature Built in voltage and wattage meters, LED indicators for power status, True sine wave output (THD &lt; 3%)