4in1 Tecar Therapy Machine Physiotherapy CET RET 448khz Sport Injury Pain Relief
Frequency: 448KHz+20KHz. Technology: CET RET RF. CET : 1 piece handle with 3 sizes electrodes. What is CET RF. RET : 1 piece handle with 3 sizes electrodes. What is RET RF. The Resistive Electrical Transfer(RET) introduced in 1994,is different from the CATin that basically the application electrode is not insulated,allowing the current to betransferred directly to the patient with less dispersion,thus obtaining an increase intemperature at a greater depth.