Interferential therapy employs medium frequency interferential currents used in 2 or 4-pole configurations to produce a low-frequency stimulation effect.Prior to the introduction of interferential therapy in the mid-1950s, low-frequency stimulation (NMES) was used for pain relief, muscle re-education etc.These currents, however, have the disadvantage that normal human skin has a relatively high impedance at such frequencies. In order to overcome the skin impedance, a larger voltage has to be used to achieve the desired current, resulting in a more uncomfortable treatment for the patient. In addition, the penetration depth of these currents is poor and in part is limited by the discomfort to the patient.

Features:
- Touch screen technology
- Three carrier frequencies – 2kHz, 4kHz and 8kHz
- 0-100mA peak constant or 0-70/140V peak constant voltage, depending upon mod
- The two independent stimulation channels allow selection of independent waveforms and treatment intensities
- Operates in conjunction with EMS vacuum unit if required
- Easy wipe clean reducing the risk of cross-infection
- Mains powered as standard, optional battery available

Specifications:
- Weight: 1.5 kg1.5 kg
- Dimensions: 108 × 237 × 333 cm108 x 237 x 333 mm
- Power Supply: Mains 18V, 3.33 A external PSU, Internal fuse T3.15A, Optional power pack available
- 16 user-defined set-ups
- Classification (EN60601-1) Class 1, Type BF
- Three carrier frequencies - 2kHz, 4kHz and 8kHz 0-100mA peak constant current or 0-70/140V peak constant current voltage depending on mode selected
- Stimulation outputs: 2 and 4 pole interferential and medi-wave
- Language options English, French, German, Spanish, Italian, Vietnamese
- Treatment timer 0-30 mins

Package includes:
1 Primo Interferential 960 therapy unit 2/4 pole patient lead, four medium (80x60mm) rubber electrodes, four medium sponge covers, four electrode connection cables ( blue and yellow) and two stretch bandages (1200x75mm)