Introduction - If you have any usage issues, please Google them yourself
(1) design a ' when' , ' points' , ' s' decimal digital display (hour timer from 00 to 23). (2) having a manual correction, the correction sub functions. (3) The alarm clock function, can send reminders at a set time (green LED flashes). (4) The whole point timekeeping. Starting at 59 minutes and 50 seconds, every 2 seconds the green LED lights flash five times in a row, when the whole point of the red LED lights flash once.