- Assembled 24 Hour Digital Clock with HH : MM : SS Display
- Includes a circuit diagram for understanding how the clock works
- To set up the clock, use a small Phillips screwdriver to open the terminal block and insert the red wire to the "+" side and the black wire to the "–" side, then tighten the screws to secure the wires in place.
- Requires one 9V battery for operation. One CR2032 button cell battery can also be used as a backup to save the time when replacing the main battery. Batteries not included.
How to set the time:
After attaching the battery, press and hold the button (labelled S1 on the board) for about 1 second, then when you let go the minute digits should be blinking to indicate that you are setting them. Press and release the button once very quickly to increase the minute by one. You can use the tip of a pencil to make it easier to push the button quickly. It is best to set minutes ahead by a minute or so that you have time to set the hour and seconds afterward. Once the minutes have been set, hold the button for about 1 second and when you let go the hour digits will blink. You can now press and release the button quickly until the hour is set. The seconds will stay at their current position until the hours have been confirmed by holding the button and releasing it when the seconds match the current time.