• Single channel, pocket-sized biofeedback thermometer.

Product Description: Skin Temperature feedback instruments generally employ precision linear thermistors for temperature detection. A thermistor is a tiny semi-conductor embedded in a small epoxy bead; it serves s a temperature sensor when the epoxy bead is in contact with the surface of the skin. A thermistor also acts as a physiological transducer in that it converts skin temperature information into an electrical resistance coefficient whose level is proportional to the monitored skin temperature. The diameter of a thermistor is very small (usually 1/8 inch or less) and it accurately detects the temperature only of the small area of the skin surface in direct contact with it. Because skin temperature can vary as much as 1 - 2 degrees F over a one inch diameter of the skin surface, the small area monitored by the thermistor can limit information consistency and reliability