SPECIFICATIONS

The products which are suitable for electronic enthusiasts to study and repair circuits. We only guarantee that the products are in good condition before delivery, and cannot guarantee 100% success after installation. The installation of the circuit requires the buyer to have experience in the circuit, please read the product description carefully before payment.

Power supply: DC3.7V-5.5V

Special reminder: If you use it for a long time, it is recommended to use a DC power supply, because if you use ordinary 3 AA batteries, the power consumption will be faster, and it is not suitable for long-term use.

Function introduction:

1. Normal walking time, time and minutes display.

2. Hours and minutes are independently adjustable;

3. Time seconds correction function.
4. The speed of the clock can be fine-tuned, 0--9 gears can be adjusted, and the default is the 5th gear.
5. Two-way alarm clock, and the switch of the alarm clock can be set independently.
6. The hourly reminder function can be turned off and opened.

7. The countdown function can realize the countdown within 99 minutes, and alarm when the countdown ends.
8. Stopwatch function, can realize the stopwatch function, can pause the stopwatch, clear the stopwatch.
9. The counter function can be realized, and the number of keys can be recorded. The number of external pulses can also be recorded.

Features:

A. Using 0.44-inch clock dedicated red digital tube for display;

B. Imported AT89C2051 as the main control chip;

C. 1.6mm thick PCB is made of military grade FR-4 sheet,

D. There are not many components, the installation is simple, the success rate is high, do not debug

E. The travel time is accurate, and the error range of travel time is about 3 seconds per month.