Renogy 12v/3000w pure sine inverter. 
The perfect addition to any off-grid system, whether for a caravan or a cabin, the Renogy 3000W Pure Sine Wave Power Inverter acts as a DC to AC converter, allowing you to power your household appliances. Unlike modified sine wave inverters, this 3000W inverter is a pure sine wave, capable of producing cleaner, smoother, and more reliable electricity to operate tools, fans, lights, and other electronics without interference. Many off-grid systems require a 12V solar inverter to power everyday electronics, and this one includes multiple protections to help things run smoothly and safely. The AC priority function enables the inverter to automatically switch from the battery (DC) to the mains (AC) and vice versa whenever the utility company takes or loses power! 
 12V to 230V/240V Pure Sine Wave Inverter With English Standard Socket (with UPS Function)
• Rapidly switches between battery and AC power within 50ms.
• Incorporates an internal backup DC fuse for enhanced safety.
• Offers comprehensive electronic protections for maximum safety.
• Delivers pure sine wave power for cleaner, smoother electricity.
• Grid priority function ensures utility power is used before the battery.