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  1. BVP/HRV Finger Sensor for Physiocom GP-4 , GP-8 & GP-12 - High-Grade Clip Type
    Blood Volume Pulse (BVP) Finger Sensor for GP-4 , GP-8 and GP-12 biofeedback devices from Physiocom Designs (formerly J&J Engineering). Can be used for Heart Rate Variability (HRV) training Learn More
    $70.00
  2. BVP/HRV Finger Sensor for Physiocom GP-4 , GP-8 & GP-12
    Blood Volume Pulse (BVP) Finger Sensor for GP-4 , GP-8 and GP-12 biofeedback devices from Physiocom Designs (formerly J&J Engineering). Can be used for Heart Rate Variability (HRV) training Learn More
    $30.00
  3. Temperature Sensor for GP-4 , GP-8 and GP-12
    Temperature Sensor for GP-4 , GP-8 and GP-12 biofeedback devices from Physiocom Designs (formerly J&J Engineering). Learn More
    $50.00
  4. J&J Input Extension Cable
    Input extender for the J&J C2+ 12 channel and 6 channel systems. Learn More
    $40.00
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