GCT GSM GM 810 M

Features
>    GPRS
>    GSM 900/1800Mhz
>    SMS single/group send
>    115.2Kbps packet data, 9.6Kbps circuit data service
>    Support RS232 port, support 1200bps-230.4Kbps multi-rate selection
>    Support Windows 98/Me/2000/XP and Linux OS
>    Support industry standard Modem AT command
>    Antenna: SMA, can connect external high-gain antenna
>    Power supply: DC 6V, connect power adapter
>    Environment:
Operating Temp:-20~60C
Storage  Temp:  -30~70C
Humidity:        5~95%
>    Dimension:  83×66×20mm