Description: AT89C2051-based of four electronic clock kit Supply voltage: 3V ~ 6V PCB Size: 52 x 42mm Function: Seconds correction (for precise School) Switch to every minute independent...Read More…
Seconds correction (for precise School)
Switch to every minute independent display interface whole point of time (8-20 o'clock chime can be turned off)
Two alarm settings (you can turn off the alarm function)
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