Clinical Electrotherapy - Mettler, Sonicator Plus 921c, 2-Channel Touch Screen Combo with Treatment Cart : The Sonicator Plus 921c is a 2-channel combination stimulator with ultrasound for precise and accurate treatment for patients by licensed medical professionals. It features a vivid color touch screen for quick and easy treatment setups. The 921c offers 6 unique waveforms; Interferential (IF-4), Premodulated (IF-2), EMS, Russian, TENS and High Voltage (HV). The easy-to-use software interface allows for quick set up, precision and clinical accuracy. The included treatment cart offers storage and mobility for carting the Sonicator Plus around the office. The Sonicator Plus 921c offers an anatomical library with electrode placement and treatment recommendations. All treatment recommendations are written by clinicians. There is space for the clinician to store and use specific treatment protocols along with a description for each. This is a tremendous combination device for any practice. With 6 clinical waveforms and 1 and 3 MHz frequency ultrasound, the 921c is one of the most advanced units on the market.