1Pcs 4 Bits Electronic Clock Electronic Production Suite AT89C2051 Digital Kit

Features:    AT89C2051-based of four electronic clock kit.    Kit Model: YSZ-4.    Supply voltage: 3V-6V.    PCB Size: 52mm * wide 42mm.

Function:    1. Seconds correction (for precise School).    2. Switch to every minute independent display interface.    3. whole point of time (8-20 o\'clock chime can be turned off).    4. Two alarm settings (you can turn off the alarm function).

Kit Features:    A. 0.56 inch special red digital clock for display.    B. Import AT89C2051 for master chip.    C.1.2mm thick PCB made from military grade FR-4 board.    D. accurate travel time, travel time error range error -1 to +1 seconds every 24 hours.

Thu, 09 Nov 2023 02:30:49 GMT 638351226499498473 CD141B8780F7142594ADD557621981AF