The Chattanooga Primera TENS/NMES Unit is a dual-channel, constant-current stimulator that pairs TENS pain relief with NMES muscle stimulation in one handheld system. It’s used by people managing acute or chronic pain and by clinicians who prescribe home programs after injury or surgery to help reduce pain, re-educate muscles, limit disuse atrophy, and relax spasms. At home, in the clinic, or on the go, users can select from eight TENS modes (including Conventional, Burst, Modulation, and HAN) and six NMES programs to match the goal of each session. The HAN waveform alternates low and high frequencies during treatment to support comfort and efficacy, while two individually isolated channels let you treat one or two sites at the same time.
Product Features and Benefits
- Two therapies in one: combines TENS for symptomatic pain relief and NMES for muscle re-education and spasm reduction
- HAN TENS waveform: alternating low/high frequency sequence designed for comfortable, effective stimulation
- Dual channels, isolated circuits: address bilateral or multiple pain sites simultaneously
- Program choice: eight TENS modes and six NMES programs to tailor each treatment
- Constant-current output: helps maintain consistent intensity across changing skin impedance
- Simple workflow: clear controls, low-battery indicator, and quick setup with included electrodes and positioning belt
- Portable design: lightweight unit supports home use, travel, and in-clinic demonstrations
- Two-year warranty for added peace of mind
What’s in the Box?
- Primera unit
- Battery
- Two lead wires
- Electrodes
- Electrode positioning back belt
- User manual
Treatment Modes
- Conventional TENS. Traditional high-rate TENS (e.g., ~80 Hz, ~200 µs) for comfortable, on-the-spot relief.
- Burst TENS. Low-rate pulses delivered in short high-frequency bursts to vary the sensation during treatment.
- Modulation TENS. Cycles pulse width and rate to help reduce nerve accommodation over time.
- HAN TENS. Alternates low (~2 Hz) and high (~70 Hz) frequency phases in a repeating sequence.
Additional TENS options and six NMES programs are available to support goals such as muscle re-education, spasm reduction/relaxation, and strength/endurance training as directed by a clinician.
Product Specifications
- Manufacturer: Compass Health
- Brand: Chattanooga
- Product Number: 77615
- Color: White/Gray
- Channels: Dual, individually isolated
- Output type: Constant current
- Therapies: TENS and NMES
- Amplitude: 0–80 mA (per channel, into load)
- Waveform: Asymmetrical, rectangular, biphasic with zero DC current
- Power: Battery operated (low-battery indicator)
- Application: Electrotherapy
- Warranty: Two years
Manuals and Documents
Sell Sheet contains product features and technical specifications.- User Manual contains instructions for use of the Primera TENS NMES Unit.
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