Good evening, earlier I wanted to reassemble a plastic cover in the vehicle interior using a hot glue gun. In the vehicle there are 3 cigarette lighters with 12V – 15A. At the respective cigarette lighter cans I had connected a DC to AC voltage converter (modified sine) with a maximum of 150Watt. At the voltage converter the green Power LED lit. At the Schuko connection of the voltage converter I had a standard hot glue gun from Tacklife (65W with 1 10-230V) connected. As soon as I turn on the hot glue gun, the voltage converter beeps and the error LED flashes. I had tried out the three 12V cans in the car and have the error everywhere. The hot glue gun works on a 230V household connection without any problems. It seems as if there is a fundamental problem with the current conversion. I assume that the voltage converter with modified sine instead of pure sine the problem looses? Is the exact difference between the two sine variants despite multiple readings. Before buying the voltage converter I had to read (trying) and had the impression that voltage converters with modified sine cover the majority of all devices but apparently no hot glue guns. Am I right and have to buy another voltage converter?