ITEM NAME:200W Car Power Inverter Dc 12V To Ac 220V Converter Dual Usb Charger Adapte B4Z4 200W Car Power Inverter Dc 12V To Ac 220V Converter Dual Usb Charger Adapte B4Z4 Important notice Check the voltages of your battery: 12 volts (note that it is only for 12 volts and not 24 V) -compatible with electronic equipment, laptops Etc Turn off or remove the switch before leaving the car to conserve battery power. Note that the cooling fan emits a little noise when using the unit. Use your 220 V devices only in a 12 V source. The technical specifications Product: car power inverter 200 W Used: use in the car. Laptop, Tablet pc DVD player, digital camera, etc. Input voltage range: 12 V DC Output voltage: ca 220V ± 10% Output frequency: 50 HZ (47-55 HZ) Input current: 8.3A Output current: 0.45A Output waveform: modified sine wave Protection against heat: 65 ℃ Low battery cut: 10 v High Battery Cut: 15 v Discharge current: less than 0.4A Conversion efficiency:Greater than 85% Continuous AC output power: 200 W Maximum power: 400 W USB: one colour: red Material:Die-cast aluminum size: 8.7x6.4x3.8cm Package Contents: Package: 1 x car inverter 1 x car charging source line 1 x conversion plug