Generic Icstation Diy Blue 4 Digit Led Digital Alarm Clock Kits Diy Electronics Soldering Practice Set At89C2051 Chip  (Multicolor)

Icstation DIY Blue 4 Digit LED Digital Alarm Clock Kits DIY Electronics Soldering Practice Set AT89C2051 Chip DIY electronic alarm clock kits with 1 inch 4 digit blue LED display Equiped with program written AT89C2051chip high precision time display Support seconds correction,hourly chime function and alarm clock 5V USB port power supply perfect for Electronics learner training or school teaching Ship it out by USPS with tracking information and 7-17 days delivery time usually This is a DIY digital electronic alarm clock kits with program written AT89C2051 chip, high precision time display. Ulra-large 1" blue led display the time tiemly.It has cell battery socket also support cell battery power supply with power memorry function.The best choice for electronic assembly enthusiasts also perfect for school electronics teaching and experimentSpecifications:Module: 4 digit LED Size: 1 inch LED Display Color: blue Working Voltage: 5V PCB (TOP) Size: 108X36mm (double-sided) PCB (BOT) Size: 108X36mm (Single) Accuracy:�1s Functiion:seconds correction, hourly chime function, alarm clock Package Included:1X 4 Digit Alarm Clock Kit1X English Manual (through email) Note: 1.When power on, it will display 12:59, the default alarm clock set as 13:01 and 13:02 in active status. Short press S2 button can interchange the hour+minute and minute+second display. Long press S1 can enter the menu setting with A,B,C,D,E,F,G,H,I submenu. 2.Short press S1 once will go to the next submenu.A:Hour Calibration press S2 plus 1 then short press S1 save the setting and go to the next submenu. A: Hour Calibration B:Minute Calibration C:Timebar Switch D:First alarm clock switch E:First Alarm clock Hour Setting F:First Alarm clock Minute Setting G:Second alarm clock switch H:Second Alarm clock Hour Setting I:Second Alarm clock Minute Setting 3.In the time display status, short press S2 go into the minute+second display, long press S2 can zero the second, short press S2 twice will show the calibratedsecond 4. When power on first time, the buzzer will