Features:1. Dual LCD digital display allows you to keep the output voltage and battery voltage value at any time.2. Fault prompt function. In addition to various sound prompts, it can also be displayed more intuitively from the display screen (eg battery undervoltage, battery overvoltage, overload, high working temperature, output short circuit, etc.).3. The overload delay closing function is added to the product to solve the sensitive problem of inverter protection when starting the soluble electrical appliance.4. The small power non-professional user market has increased the positive and negative pole reverse protection function.5. Intelligent temperature control oil sealing fan. 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 of protection circuit.Descriptions:1.It is an inverter, using STM chip technology and kinds of intelligent protection, high reliability.2. Widely used in cars, steamships, mobile services providing post and telecommunications, public security, emergency and other fields.Specifications:Color: Black / Yellow (optional)Output waveform: Modified sine waveActual power: 4000WPeak power: 500WInput voltage: 12VInput voltage range: 9.5V-15.5VOutput voltage: 110V / 220V (optional)Output voltage range: 110V 10% / 220V 10%Frequency: 50 Hz / 60 HzInverter efficiency: 0.9Circuit topology: push and encourage typeNo-load current: 0.7 ALow voltage protection: with a minimum protection voltage of 9.5VHigh voltage protection: with a maximum protection voltage of 15.5 VOverload protection: YesOutput sho circuit protection rt: YesReverse connection protection of positive and negative poles: YesOutput voltage stabilization: YesProtection buzzer: YesUSB interface: 2.1A x 2Input terminal connection mode: terminalOutput interface: international general socketProduct Dimensions (mm): 161mm / 6.28in x 112mm / 4.37in x 56mm / 2.18inPackaging information:Package size: 187x100x145mm /7.29x3.9x5.66inPackage Weight: 650g / 1.43lbGeneral packagingPackage Included:1 x inverter 1 x crocodile clip1 x Cigarette LighterNote:1.Please allow 1-2mm errors due to manual measurement.2.Item color displayed in photos may be showing slightly different on your computer monitor since monitors are not calibrated same.