Features 1. dual LCD digital display to view output voltage and battery voltage at any time 2. fault warning function. In addition to various sound messages, they can be displayed more intuitively on the screen (such as battery undervoltage, battery overvoltage, overload, high operating temperature, output short circuit , etc.) 3) The product adds the function of delayed shutdown when overloaded, which solves the thorny problem of protecting the inverter when soluble electrical appliances are turned on . 4) Aimed at the small-power non-professional user market, it adds positive and negative feedback protection function. 5) Oil-sealed fan with intelligent temperature control function. When the inverter is running, it can work at a certain temperature, which is both energy-saving and quiet. 6) Digital control by microcontroller, output waveform and frequency more accurate, more accurate output voltage and fast response speed of the protection circuit. Output voltage: 110V/220V (optional) Output voltage range: 110 V 10% / 220 V 10% Frequency: 50 Hz / 60 Hz by 9.5 V High voltage protection: with a maximum protection voltage of 15.5V Overload protection: short protection -output circuits: Protection against forward and reverse operation: Output voltage stabilization: Yes Buzzer protection: USB connector: 2. 1A x 2 Input connector: terminal Output connector: international universal plug Product dimensions (mm): 161mm / 6.28in. x 112mm / 4.37in. x 56 mm / 2.18 in. Package includes: 1 x Inverter (other items in the picture are props and are not included). Please note that 1 The size is manually measured, there may be some deviation 1-3cm error, hope you understand 2 Due to different monitor calibrations, the item color displayed in the photo may be showing slightly different on your computer monitor. computer.