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  1. 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
  2. Mindfield eSense Temperature - Temperature sensor for iPhone & Android
    The eSense Temperature is a small sensor for measuring your skin temperature with the microphone input of your smartphone or tablet (Android or Apple iOS.). Learn More
    $144.00
  3. J&J Input Extension Cable
    Input extender for the J&J C2+ 12 channel and 6 channel systems. Learn More
    $40.00
  4. -56%
    Ground Lead for J+J I330C-2 18 inch
    Ground lead for J&J Engineer biofeedback system. Part# GL-2 Learn More
    was $22.50 Special Price $9.99
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