DIY PCB Circuit Board Digital LED Electronic Clock Alarm Kits Set 4 Di

DIY PCB Circuit Board Digital LED Electronic Clock Alarm Kits Set 4 Di Description

Description:

0.56 inch special red digital clock for display.
Import AT89C2051 for master chip.
1.2mm thick PCB made from military grade FR-4 board.
Accurate travel time, travel time error range error -1 to +1 seconds every 24 hours.
4-digit LED display,ideal digital clock DIY kit for electronics enthusiasts, easy to install.

Specification:

4-digit electronic clock kit based on AT89C2051
Material: Plastic, Electronic Components
PCB Size: 52x42mm/2.05x1.65inch
Supply Voltage: 3V-5V (5V Recommended)
Function:
Seconds correction (for accurate timing).
Can switch to the minute and second independent display interface.
Whole hour is reported (8-20 o'clock hourly, 3 seconds, can be closed).
Two-way alarm setting (can turn off the alarm function).

Package Includes:

1 Set DIY Clock Kit

Note:

Pls allow an error of 1-3mm due to the difference of manaul measurement.