The Tweeting Intercom

The Tweeting Intercom: (Door Strike) Relay Monitoring w/ Raspberry Pi

This instructable is all about monitoring the state of relays using a Raspberry Pi. In the particular case we will have a look at a sophisticated Telegärtner DoorLine Pro intercom which holds two voltage-free relays. Normally, those are used to trigger an electric door strike or a doorbell but together with a Raspberry Pi can […]

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