基于EVC的6的GSM模块收发短消息的程序，可发送免提信息，单片机程序，需要一个GSM模块，用单片机控制GSM模块收发短信。-6 Based on the GSM module EVC revenue Send PM procedures, can be sent hands-free information, SCM, you need a GSM module, GSM module with a microcontroller send and receive SMS.