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New Circuit with Solid State Relay

A project log for Humidity/Temp Controlled Power Outlet

A standard USA 110v power outlet which is connected to an arduino via a relay and activated based on certain temperature and humidity ranges

brianBrian 01/02/2015 at 20:320 Comments

Is this circuit safe the way i wired up the relay? I notice in alot of other circuit designs they use transistors but i can't see the reason why it is needed.

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