www.amrex-zetron.com/stim.html
Manufacturer's Description: True Interferential Therapy The Z-Stim IF150 is a TRUE Interferential Stimulator with two channel, four pad output. Each channel generates separate frequencies which interact at the treatment site producing TRUE interfe ...
www.healiohealth.com/tek9.asp?pg=products&specific=jnnrmmm8
Manufacturer's Description: Carrier Frequency: 4000Hz., fixed Interference Frequency: 4001-4150 Hz Difference Frequency: 1-150 Hz., adjustable Output Voltage: 0-16 volts (through 500 ohms) Waveform: Symmetric biphasic square Pulse W ...
www.mettlerelectronics.com/216_detail.htm
Manufacturer's Description: The Sys*Stim 216 is a portable, battery-operated interferential stimulator. It has three preset frequency sweeps plus a programmable single frequency selector as well as an automatic vector function. In additio ...