Features: 1. Dual LCD digital display allows you to monitor output voltage and battery voltage at any time. 2. Fault alert function with ble and visual indicators on the display screen for conditions such as battery undervoltage, battery overvoltage, overload, high operating temperature, and output short circuit. 3. Overload delay shutdown function helps prevent false tripping during startup of motor-driven appliances. 4. Includes reverse polarity protection for positive and negative terminal connections, suitable for small power non-professional user applications. 5. Intelligent temperature-controlled fan provides efficient cooling with reduced noise and improved energy efficiency. 6. Digital MCU control ensures stable output waveform, accurate frequency, precise output voltage, and fast-acting protection circuit response. Suitable for use in vehicles, boats, mobile stations, telecommunications, public safety, emergency systems, and other applications. Specifications: - Output Voltage: 110V / 220V (selectable) - Output Voltage Range: 110V ±10% / 220V ±10% - Frequency: 50Hz / 60Hz - High Voltage Protection: Maximum protection voltage of 15.5V - Overload Protection: Yes - Output Short Circuit Protection: Yes - Reverse Polarity Protection: Yes - Output Voltage Stabilization: Yes - Buzzer Alert: Yes - USB Interface: 2.1A x 2 - Input Connection: Terminal block - Output Interface: Standard universal AC outlet - Product Dimensions: 161mm x 112mm x 56mm (6.28in x 4.37in x 2.18in) - Package Dimensions: 187mm x 100mm x 145mm (7.29in x 3.9in x 5.66in) - Package Weight: 650g (1.43lb) - Packaging: Retail box Package Included: - 1 x Power Inverter - 1 x Alligator Clip Set - 1 x Cigarette Lighter Cable Note: - Please allow 1-2mm variation due to manual measurement. - Item color may appear slightly different on various monitors due to display calibration differences.