The InTENSity™ IF Combo combines Tens and Interferential to give you the best chance of treating patients that may need something stronger than a Tens unit. The IF Combo has 4 modes of Tens and 4 modes of Interferential. The InTENSityTM IF Combo is 105mA strong and comes standard with an AC Adapter. Wave Form: Tens - Monophasic Square, Interferential - Biphasic Square Pulse Rate: Tens - 1-150 Hz, Interferential - 4kHz Pulse Width: Tens - 50-300us, Interferential - 125us, phase duration: 250us Output Voltage: Tens - Constant Current, Interferential - Constant Current Current: Tens - 0-105mA, Interferential - 0-105mA•Modes: Tens - 4, Interferential - 4• Timer: Tens - 1-60 Constant, Interferential - 1-60 Constant, Interferential Freq: 1-150 beats