GPRS GSM Module A7 SMS Voice Development Board Minimum System

Features:

• Size 22.8 × 19.8 × 2.5mm;

• Operating temperature -30 ℃ to +80 ℃;

• Working voltage 3.3V-4.2V;

• Starting voltage> 3.4V;

• Standby average current 3ma below;

• Support GSM / GPRS four bands, including 850,900,1800,1900 MHz;

• Support China Mobile China Unicom 2G and the global GSM network;

• GPRS Class 10;

• Sensitivity <-105;

• Support voice calls;

• Support SMS text messages;

• Support GPRS data services, the maximum data rate, download 85.6Kbps, upload 42.8Kbps;

• Support standard GSM07.07,07.05 AT command and Ai-Thinker extended command;

• Support two serial ports, a download serial port, an AT command port;

• AT commands support standard AT and TCP / IP command interfaces;

• Support digital audio and analog audio, support HR, FR, EFR, AMR voice coding;

• Support ROHS, FCC, CE, CTA certification;