On board telephone;
Short message receive and send;
Phonetic Dispatch command broadcast;
Dispatch diction;
Telephone book;
Emergency help;
Short message management;
Configure the device parameter.
Power supply: 5V£¨¡À10%£©;
Max. Work current: 200mA;
Sleeping current: less than 45mA;
Work temperature: -10¡æ¡« +55¡æ.
