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The Anti sleep alarm works on the principle of electronic balance and does not interfere with normal movements in the car. The alarm sounds only when a person’s head falls forward in drowsiness. Simple but effective.
How does it work
Turn the power on, and wear it on right or left ear. It emitts “Bi-Bi-” alarm when driver tends to fall asleep with his head lowered; there is no sounds emitted when driver keeps normal driving status with eyes looking forward.