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Author Topic: Air conditioner control via SMS  (Read 50 times)
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Hello,
           I wanted to know if it was possible to use the Arduino+GSM+Relay boards for controlling the AC supply(on/off) to an air conditioner via SMS.  Controlling the on/off state of a bulb is simple since the power consumption is not very high. The relay board I used for the bulb could handle current upto 8A. But can the same arrangement be applied to an air conditioner as well? I guess it depends on the type of relay being used? Correct me if I am wrong.
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Seattle, WA USA
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But can the same arrangement be applied to an air conditioner as well?
With an appropriate relay, yes.

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I guess it depends on the type of relay being used?
Yes, it does.

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Can you please specify the exact relay I would have to employ?
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Depends on how much power the air con unit draws.
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Depends on how much power the air con unit draws.

The input AC power is 220V. The air conditioner requires 1950watt generally.
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And peak current draw? Is it an inductive load? Because that's what you need to switch, unless you want to weld the relay contacts together.
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A powertail switch would be the safest way and would avoid you needing to deal directly with any dangerous high voltage circuits.
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