EMS, A: EMS with Rate Modulation, N: Normal, M: Mixed Frequency, B: Burst, SD: Width Modulation, MR: Rate Modulation MH6000 Pre-programmed TENS and EMS Channel-dual, isolated between channels Preset programs9 preset TENS or EMS programs, prepared in the factory according to the customer’s parameter Programmable programs3 programmable programs are available for setting by user Intensity-adjustable 0-80mA, Max output 80mA peak to peak (17mA rms) into 500ohm load each channel.