The alarm activates in 10 seconds after pressing the A button. For detecting objects it uses an ultrasonic sensor, and once the alarm detect something a buzzer starts emitting a sound. In order to stop the alarm we need to insert a 4 digits password. The preset password is 1234 but we also have the possibility to change it.
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Maker Business — Zenefits founder Parker Conrad takes another crack at HR onboarding
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Biohacking — After-Sight : Raspberry Pi Wearable Vision Assistance
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