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"Pyroelectric Detector"

Abstract: ELTEC pyroelectric amplifier circuit DS408 metal detector To5 transistor people counting ELTEC INSTRUMENTS plate filter
Contextual Info: Model 408 Single Element Pyroelectric Detector with Current Mode Amplifier ELTEC Manufactured under one or more of the following U.S. patents: 3,839,640 - 4,218,620 - 4,326,663 - 4,384,207 - 4,437,003 - 4,441,023 - 4,523,095 Model 408 consists of a single