If you set an event or to-do item to send you an email alarm before it occurs but you're not receiving the email, there are a few possible causes.
如果您设置在事件或待办事项发生前收到电子邮件提醒，但是却没有收到该电子邮件，有几种可能的原因。
2
Designed a wireless non-contacting alarm system of closing train, and its Launching and receiving is controlled by MCU.
设计了一种由单片机控制的无线发射与接收的非接触式的火车接近报警系统。
3
It realizes the functions of the vehicle real-time monitoring, sending and receiving SMS information, the process of alarm, the optimization of shortest path and so on.