Pyroelectric infrared sensing automatic door control and voice calling circuit HN911D

Published:2011/5/11 19:03:00 Author:TaoXi | Keyword: Pyroelectric, infrared sensing, automatic door control, voice calling | From:SeekIC

The circuit is as shown. It is composed of the pyroelectric infrared sensor module, the delay control network, the electric coupling & SCR control circuit, the language voice circuit, the AC step-down rectifier circuit.etc. The HN911D is one kind of pyroelectric infrared detector module.



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