Features four frequency shifts that are tracked with an indicator light. Uses four AA or optional wall adapter. Indicator light warns when batteries are low. Measures 2-3/4” x 4-1/2” x 1-1/2”. Weight 8.1 oz.

INF Plus® Interferential Stimulator Specifications:
Carrier Frequency:              4000 Hz, Fixed
Interface Frequency:           4001 -4150 Hz, Adjustable
Waveform:                            Symmetrical Bi-Phasic sine wave
Output Current:                    0-66 Ma peak to peak with 500 ohm load
Pulse Width:                         125 µs for each phase
Max. Charge/Cycle:            12.5 µcoulombs
4 Frequency Shift:               Continuous, 1-10Hz over 6 second, 80-150 over 8 second
                                                and 1- 150 Hz over 10 second