GSM SMS and prerecord voice module mainly complete the functions
about GSM SMS and transforming telephone display into standard
RS232 communication agree-ment. All these are convenient for the
second development and application. Function: Support
GSM900MHz/1800MHz A standard RS232 serial port, baud rate 9600bps
Support standard SMS data-format, including functions of receiving
and sending message. Can achieve telephone-show and converse
control. Provide power adapter and directive of receiving &
sending data. Voltage: AC220V (input), DC7.2-9Vl (output)