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Recent content by alfyhide

  1. A

    automatic school siren controller

    the link provided by drbizarow did not meat the requirements. what is needed is a simple circuit
  2. A

    automatic school siren controller

    i am looking for assistance sir not buying. - - - Updated - - - i need a stand alone type because most of the time there is no electricity at the school
  3. A

    automatic school siren controller

    i ma looking for a complete (with schematic diagrams ) project of an automatic school siren (bell) controller which can be programmed 40 to 50 different events (times) per day .which should display day, date ,time, and year ,preferably with password protection. power source should be 12V DC or...

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