The GSM18E07-P1J is a DC-DC power supply module made by the electronics company Mean Well. It is a non-isolated, open frame, 18 Watt module with an ultra-wide 4:1 input voltage range and a very high efficiency of up to 93.0%. The device features a PFC (Power Factor Corrector) function with a working frequency of up to 100 kHz, enabling low-noise, no-load operation, and enhanced EMC performance. The GSM18E07-P1J also has an intelligent input over-voltage protection, short-circuit protection, over-current protection, and over-temperature protection.