Features: 1. Dual LCD digital display allows you to monitor output voltage and battery voltage at any time. 2. Fault indication function. In addition to ble alerts, issues such as battery undervoltage, battery overvoltage, overload, high operating temperature, and output short circuit are clearly displayed on the screen. 3. Overload delay shutdown function helps prevent false triggering of protection when starting inductive loads. 4. Includes reverse polarity protection for non-professional users in small power 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 circuitry. Suitable for use in cars, boats, mobile stations, telecommunications, public safety, and emergency applications. Specifications: - Output voltage: 110V/220V (optional) - Output voltage range: 110V ±10% / 220V ±10% - Frequency: 50Hz / 60Hz - High voltage protection: Up to 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 terminal connection: Terminal block - Output interface: Standard universal 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: Standard retail box Package included: 1 x Power Inverter 1 x Alligator Clip 1 x Cigarette Lighter Cable Note: 1. Please allow 1-2mm variation due to manual measurement. 2. Item color may appear slightly different in photos due to monitor calibration variations.