4U CHECK4U 3 Manual - Page 14

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2) Swipe the card downwards

*After it is swiped down, there will be another beep sound, and the green and

red LED will flicker. If the card is correct, the green LED will light on with the

sound of two beeps, and if not, the red LED will light on with the sound of

three beeps.

3) If the indicating part becomes on with a green color, insert the coins or bills

and buy the cigarette.

When it doesn't work properly, try it again using the same method.

As a reference,