Simple Burglar Alarm with Transistor 2N4401
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![How Does a Burglar Alarm Work? [Infographic] - Fire Action](https://www.fireaction.co.uk/wp-content/uploads/2017/04/fire-action_51133134-1.png "How Does a Burglar Alarm Work? [Infographic] - Fire Action")
How Does a Burglar Alarm Work? [Infographic] - Fire Action
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![How Does a Burglar Alarm Work? [Infographic] - Fire Action](https://www.fireaction.co.uk/wp-content/uploads/2020/07/SDP9513-1024x681.jpg "How Does a Burglar Alarm Work? [Infographic] - Fire Action")
How Does a Burglar Alarm Work? [Infographic] - Fire Action
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