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Connect multiple Reed Switches to one Raspberry pi Answered


I was wondering if its possible to connect multiple reed switches to 1 Raspberry Pi so i can get notified whenever 1 or more switches gets triggerd.

thank you.

1 Replies

panic mode (author)2017-09-09

reed switches are normally open contacts that get triggered (close) in presence of magnetic field. to detect if one or more of them are triggered wire them in parallel.

if they are triggered (for example monitoring doors or windows) and you want to detect if one or more loose trigger (door open), connect them all in series, ...

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