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  1. 1089 MKIII Checktrode Impedance Meter
    The 1089 Mark III EEG impedance meter provides quick and easy evaluation of total electrode contact impedance and offset voltage between two electrodes. Learn More
    $699.00
  2. 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
  3. 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
  4. Wrist to Wrist EKG /ECG Straps and Pellets
    EKG Wrist straps with Pellets. For use with any three snap lead cable. Learn More
  5. Neurofield Power Supply for X3000 or Q20
    Neurofield power supply (one needed for each box. (The Q20 can also be placed on battery). Learn More
    $375.00
  6. 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
  7. 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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