Model: SIM928 (SIMCom)
TX Power: 2W (Class 4) 850MHz/900MHz, 1W (Class 1) 1800MHz/1900MHz
Antenna connector: UFL
External Antenna: 0dBi
Consumption in sleep mode: 1mA to 1,5mA
Consumption in power down mode: 0μA
Time-To-First-Fix 30s (typ.)
- Tracking: -160 dBm
- Acquisition: -147 dBm
Accuracy horizontal position : <2.5m CEP
Power consumption (GSM engine in idle mode)
- Acquisition : 72mA
- Tracking : 67mA
•• Making/Receiving calls.
•• Making ‘x’ tone missed calls.
•• Sending/Receiving SMS.
•• Single connection and multiple connections TCP/IP and UDP/IP clients.
•• TCP/IP server.
•• HTTP service.
•• FTP service (downloading and uploading files).
•• GPS receiver
•• OTA. Refer to the Over the Air Programming Guide for more information: http://www.libelium.com/development/waspmote/documentation/over-the-air-programming-guide-otap/
In June of 2015, the GPRS+GPS module with chipset SIM908 is discontinued. The chosen chipset to replace it is the SIM928A. So the new version of GPRS+GPS uses the SIM928A. Those 2 chipsets are very similar: there are not any differences regarding GPRS features or handling. There are only small differences in GPS performance and handling.
There are 2 different GPRS modules, the GPRS+GPS module and the GPRS module (also know GPRS Pro module). The GPRS module offers GPRS connectivity. The GPRS+GPS module offers exactly the same GPRS features, and adds GPS features too. Both modules are controlled in the same way for the GPRS features: the software library is the same. This is the guide for the GPRS+GPS module. If you are not interested in adding GPS features to your GPRS module, you may consider the GPRS module.
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