RS232 cheap cost SMICOM GPRS T900 M2M modem with SIM900 module CE certification

T900

T900 is a GPRS terminal based on the cellular module SIM900. The intelligent terminal support Quad-band GPRS of Class
10 transmission capability, and integrated with TCP/IP stacks , it can be utilized as an all-in-one M2M solution that require voice and data exchange in worldwide coverage.
With a wide range of industrial interfaces and extended working temperature range, the reliable terminal is an ideal solution
for most applications such as remote maintenance & control, environmental monitoring and security etc. It allows quick and
easy implementation, reduces customer cost significantly and lowers the entry barriers to wide range M2M businesses.
T900 supports embedded AT(*), which provides the possibility for customers to develop and run programs inside the modem
itself and meet various customers'needs. With standard serial RS-232 interface, customers can easily implement the data
flow control, hardware or software flow control according to customers' requirements.

General feature
* Quad band: 850/900/ 1800/1900MHz
* GPRS multi-slot class 10/8
* GPRS mobile station class B
* Complaint to GSM phase 2/2+
- Class 4 (2 W @850/900 MHz)
- Class 1 (1 W @1800/1900MHz)
* Dimension: 98*60*22 mm
* Weight : 125g
* SIM application toolkit
* Vin:5~30V
* Low power consumption
* Operation : -40°C to +85 °C

Specification for data
* GPRS class 10: max 85.6 kbps (download)
* Support PBCCH
* Coding schemes CS 1, 2, 3, 4
* PPP-stack
* CSD up to 14.4 kbps
- USSD
- Non transmit mode

SMS
* Point to point MO and MT
* SMS cell broadcast
* Text and PDU mode

Soft future
* 0710 MUX protocol
* Embedded TCP/UDP protocol
* Embedded AT

Interface
* Internal SIM 1.8V/3.0V
* Power10 pin connecter
* Serial DB9(female)
* GSM antenna 
- Audio