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Light-Operated Doorbell

Light-Operated Doorbell

2436158IC1NE555O/PGNDRVccCOMIC2UM6621OUT3IN+3.6VVR1470KLDR1GNDC10.01μZD13.3VZENERR2150ΩT1BC548LS10.5WLOUDSPEAKERR11KLight-Operated Doorbell
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publish time: 2020-10-26
Circuit Everyday

Light-related switches are used in toilet automatic hand dryers and washers.This is a simple light-controlled switch that also works in normal light.You can paste it on the front door of your house and use it as an automatic doorbell or thief alarm.As soon as someone's shadow falls on the device's sensor, the bell rings.

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