I was watching a video about smart home setup when I realised that even if I switch off the device from my phone, it will still consume the power then whats the benefit besides you dont have to getbup from your couch to do it manually. Am I right or IoT things work differently.
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These devices power themselves down partly. They still need to be working to receive a command to turn on again. Buttons on them are usually microswitches that bridge two contacts and then rebound to an off position, which gives a working logic element a command. To turn something on an off fully using a switch, it has to stick to one of two positions like the black rockers labelled “I / O” on the back of computers.
Another way how a small device can turn a bigger one off is a relay, where it energizes an electromagnet that moves to connect a switch, then everything behind the this switch can be fully off. You can hear it with big appliances like fridges. But the part with the relay has to remain powered on and waiting.
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