Samlex SA3000K-124 24V 3000 Watt DC/AC Pure Sine Wave Inverter 24 Volt, 3000W Continuous Output Power, 6000W Surge Output Power Isolated input and output, Load controlled cooling fan, Advanced microprocessor design Output frequency 50/60 Hz switch selectable, Power saving mode to conserve energy Protections: overload / short circuit, reverse polarity (fuse), over/under input voltage, over temperature Tri-color indicators display input, output level & failure status, Pure sine wave output (THD &lt; 3%)