It is very easy to build an “SMS-controlled relay” with the help of a cheap GSM modem module and a small microcontroller board. Here, I’m using the SIM800L and Arduino Nano V3 to develop a nifty ...

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Find Arduino Sim800l Latest News, Videos & Pictures on Arduino Sim800l and see latest updates, news, information from NDTV.COM. Explore more on Arduino Sim800l.