This 12V 4A power adapter employs latest technologies to achieve excellent regulation, high power density and safety with good EMI performance. The 12V 4A adapter will improve efficiency to a level of 88% and reduce power consumption at standby mode, thereby contributing to reduce environmental burden. The AC DC adapter 12V 4A comes with compact size, low noise and high reliability and supports various demands from highly precise measurement devices. The AC DC adapter 220V to 12V features multiple protection functions to guarantee safe operation and reliability including OCP,OVP,OLP.. The 12V 4A AC/DC adapter is backed by a 3-year warranty. The 12V AC power supply series is safety certified to IEC/UL/EN 60950-1 and carries the CE mark for the Low Voltage and RoHS Directives. The 12V series is also compliant to EN 55022-B and FCC Class B for radiated and conducted emissions and the IEC 61000-4 immunity and IEC 61000-3-2 harmonic current standards.