Introduction - If you have any usage issues, please Google them yourself
A total of four buttons: confirm/modify, shift, time plus, time minus LCD1602 Interface Description: the first acts of the system is currently running (two kinds): Runing- indicates operation can not set any parameters Timing- that enter the school at the time state the second line is not the current time display and setting by corresponding with the shift keys- were flashes to indicate seconds, and then with time plus/minus time timing parameters- points