In addition to the EFE300 and 400, the "M" versions are available. These units have two sets of safety certification, IEC 60950-1 for ITE (Information Technology Equipment) and IEC 60601-1 for Medical use. The units are also BF rated and have 4000VAC input to output isolation and 1500VAC output to ground. Leakage current is low, just 123µA at 120VAC input.