DIY Electronic Doorbell Analog Circuit with NE555 DC 6V Kit – Build Your Own Doorbell Circuit

$18.99

DIY Electronic Doorbell Analog Circuit with NE555 DC 6V Kit (10006443)1.Introduction:TJ-56-28 is a NE555 Doorbell Analog Circuit Electronic Soldering DIY Kit. It is an electronic doorbell control system. When the button is pressed, the horn makesa sound ‘dingdong~~’It is a very interesting DIY electronic product which enables users to understand…

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