RING Modified Sine Wave 1000w Inverter - ERINVMA10. This 1000W Modified Sine Wave Inverter ensures reliable and efficient power supply. It features a single socket with a compact, heavy-duty extruded casing, perfect for portable use. Ideal for powering devices in cars, trucks, boats, and caravans. Simply plug into your vehicle's socket to convert power effortlessly. Specifications: Voltage: 12V DC Input 230V AC Output, Wattage: 1000W, Output Waveform: Modified Sine Wave, USB: 2.1A.