DIY 4 Digit LED Electronic Clock Kit Large Screen

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1. After installation is completed you need reset the clock circuit to work properly, as follows:

Method 1: Press and hold the plus button and function keys, then power the circuitry, release the button. Then it will display 7:59, it means reset successful, five seconds after will display 8:00. At the same time, the buzzer will loud for one minute, press plus key again to cancel the sound.

Method 2: Power, first press and hold the plus button, and then press the function button, and then release. Then it will display 7:59, it means reset successful, five seconds after will display at 8:00. At the same time, the buzzer will loud for one minute, press plus key again to cancel the sound.

2. Set the time:

Hour: Press the function button (hour digital tube and two points are blinking), press the plus button can set hours;

Minute: Press the function button again (minute digital tube and two points are blinking), press plus button can set minutes.

Alarm hour: Press the function button again (hour digital tube is blinking but the two points are dark), press the plus button can set alarm hours;

Alarm minute: Press the function button again (minute digital tube is blinking but the two points are dark), press plus button can set alarm minutes. How to identify if the alarm is on: Press the function button again (Hour, minute and two points are not blink), press plug key, indicate points lights (alarm ON), indicate points off (alarm off); How to set the whole point timekeeping: Press the function button again (Hour is blinking, but two points are not blink), press plug key to set alarm begin time (for example set 8, means it will timekeeping at 8:00); Press the function key again (Minute is blinking, but two points are not blink), press plus key to set end time (for example set 22, it means the timekeeping is 8:00 to 22:00); press function key to exit, setting finish.