A7 GSM/GPS Shield

A7 GPRS/GSM/GPS Shield, which is use the newest A7 GSM/GPRS/GPS module, A7 module is a GSM/GPRS/GPS function module. Supports GSM/GPRS Quad-Band（850/900/1800/1900） network. It supports voice calls, SMS messages, GPRS data service and GPS function.
The module is controlled by AT command via UART and supports 3.3V and 4.2V logical level.

Specification:

• Operating temperature -30 ℃ to + 80 ℃
• 1KG peak suction
• Low standby current
• Operating Voltage: 3.3V – 4.2V
• Power voltage: >3.4V;
• Standby average current 3ma less;
• Support the GSM / GPRS four bands, including 850,900,1800,1900MHZ
• GPRS Class: 10
• Sensitivity: <-105
• Support voice calls
• Support SMS text messaging
• Support GPRS data traffic, the maximum data rate, download 85.6Kbps, upload 42.8Kbps
• Supports standard GSM07.07,07.05 AT commands and extended commands Ai-Thinker
• Supports two serial ports, a serial port to download an AT command port
• AT command supports the standard AT and TCP / IP command interface