This circuit beeps when the sensor is triggered by the opening of the freezer door or other conditions that can be determined by the user. The circuit is of a Modern Electronics of 1976. The power can be made with voltages from 6 to 12 V.
This circuit beeps when the sensor is triggered by the opening of the freezer door or other conditions that can be determined by the user. The circuit is of a Modern Electronics of 1976. The power can be made with voltages from 6 to 12 V.
