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Great for permanent installation in a caravan or 4WD, this Calibre 300W Power Inverter will give your devices the power they need, even when you’re away from home. By connecting this unit to a 12V battery, this Calibre power inverter can supply 300W of 240V AC power. This particular unit is a ‘Pure Sine Wave’ style inverter as well, creating smooth clean power for your devices, just like the power fed to your home. That ensures that this unit will power DVD Players, Laptops, along with desk lamps and coffee machines without causing the devices to overheat, or become otherwise damaged. This unit also has overload and short circuit protection, along with an automatic thermal shutdown and restart function to protect the device. This inverter is even smart enough to detect when the 12V source is no long producing a high level of voltage, at which point, a warning notification will be produced.