Features:1. With dual LCD digital display, you can keep the output voltage and battery voltage value at all times.2. error prompt function. In addition to the various audible cues, it can also be displayed more intuitively from the display screen (e.g. battery undervoltage, battery overvoltage, overload, high operating temperature, output circuit short circuit, etc.).3. The overload delay closing function is added to the product to solve the sensitive problem of inverter protection when the solvable electrical appliance starts.4. The small power non-professional user market has increased the positive and negative feedback protection function.5. Fan with intelligent temperature control for oil seals. When the inverter is working, it can work at a certain temperature, which is more energy-saving and quieter.6. MCU digital control, output wave type, more accurate frequency, accurate output voltage, fast response protection circuit. in automobiles, steamships, mobile mail and telecommunications, public security, emergencies and other fields. -12V output voltage: 110 V output voltage range: 110V 10% / 220V 10% Frequency: 50Hz / 60Hz from 9.5V : YesOutput Voltage Stabilization: YesBuzzer protection: YesUSB interface: 2.1A x 2 input port connection mode: Terminal output interface: International general socket Product size (cm): 18.7 x 10.0 x 14.7cm Note:1.Please allow 1-3cm deviation due to manual measurement.2. The actual color may vary slightly from the image due to different monitor and light effects.