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Pyroelectric infrared sensor automatic door control and language alarm circuit (HN911D)
Source: InternetPublisher:桂花蒸 Updated: 2015/09/30
The circuit is shown in the figure. It consists of pyroelectric infrared sensing module, delay control network, photoelectric coupling and thyristor control circuit, language sound circuit, AC step-down rectifier circuit, etc. HN911D is a pyroelectric infrared detection module. Latest Remote Control Circuits Circuits
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