*8)Can dial "*0" to "+"
*9)Black list and white list
*0)Set the talk minutes or call times you want and LED will warn
you to change SIM when come up to your setting.
*1)Simple to install and easy to maintain
*2)Steady module & reliable design ensures good performance
*3)Strong signals with high gain antenna
*4)No noise & Clear voice
*5)Suitable for wide voltage range & Low power consumption
*6)Suitable for all kinds of weather & environment
*7)Offer keypad command sets to difine functions
