To determine whether a dash cam records properly at night, the following methods can be used for comprehensive confirmation. First, observe the status of the device's indicator lights: if the red light flashes continuously or the screen displays the "REC" sign, it usually indicates that recording is in progress, while a steady blue light means the device is operating normally. Professional testing institutions will evaluate indicators such as low-light sensitivity (It is best to choose models with 1.0 lux or below) and dynamic range. If the device supports parking monitoring, it is normal for the red light to flash intermittently after the engine is turned off. It is best to regularly check the memory card capacity (64GB or above is recommended) and format it to avoid recording interruptions due to storage issues. Mainstream models such as the Thinkware F800 Pro employ WDR (Wide Dynamic Range) technology, which can enhance night imaging quality. When purchasing, attention should be paid to whether the wide-angle range (140°-170° is preferred) and infrared fill light distance meet the requirements.