Safe

Use the potentiometer to select digits and enter the password to open the safe. If the safe is cracked open, the system will sound an alarm.

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Building Instructions

Building Instructions

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Sample Program

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Sample Program

Program Instructions

Press the button to begin entering password, select a digit by turning the potentiometer, press the button to confirm. Once 4 digits have been entered, the safe door opens if the password is correct(default: 2021).