Thermoelectric Effect Detector 2 : A fire detector whose sensing element is a thermocouple or thermopile unit which produces an increase in electric potential in response to an increase in temperature
Ralph W. Burklin & Robert G. Purington, Fire Terms: A Guide to Their Meaning and Use, National Protection Association, Boston, MA 1980 USA. (Guide: Meaning and Use, Nat Prot Association Fr Srvc - Amer) {457}