Measurement of skin temperatures of active subjects by wireless telemetry.

A new sensor has been developed for measurement of skin temperatures of active human subjects that consists of a radio transmitter circuit incorporating a skin thermistor in a small epoxy slab or "tab." These tabs are reuseable, being large enough to permit battery replacement if required. They are glued to a subject's skin (thermistor side facing the skin) with a quick-setting adhesive and are easily removed after a 10-h period with an appropriate solvent. Thermal information is easily obtained from the sensor by a hand-held calibrated radio receiver accurate to +/- 0.1 degree C. This technique permits easy and rapid documentation of the thermal stress of active human subjects without interfering with their activity or clothing.