Atthidtimea lotof automationis used invariousfields that are mandatory tokmakeiteasierfor human todo allthe work. This researchisintendedtocreate a monitoring system. Thissecurity system uses arduino microcontroller asthe main controllerthatservesto improve thesignalfromthelight sensor, flame sensor,andgassensor which isthen used asoutputsignal andsenttotheactuator.Device that actas inputonthissystemare3types of sensors,theLDRsensor asa light input,flamesensoras firedetector input,andMQ-2  gassensor that servesasagasleak detector. The programon the arduino isenabled to configure andinitialize the hardware andreceive inputsignalsfromthe 3 sensorswhichwillthebe processed undersomeconditionsto producethe desired  output.  MQ-2  and  LDR sensor test resultshowdata witha fairly good  standard  deviation  and thisfinalresultisa homesecurity system that is monitored through SMSGateway withfastspeed notificationdelivery speedusing Telkomsel Provider.
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