The EMX-AC-1251 is a power supply module manufactured by EMAX. It is designed to provide a regulated voltage output of 12VDC@1.2A. This module has an input range of 100-140VAC and can operate in a temperature range of -20C to 60C. It features overload, short circuit, and overvoltage protection to ensure the safety of the device and its surrounding components. Additionally, it has a built-in active PFC function for better performance.