A7 is the world's smallest quad-band GSM / GPRS module
The size is only 22.8 × 16.8 × 2.5mm
GPRS module A7 latest "simple, easy to use GPRS transparent module"!
A GPRS data transmission core module, providing serial transfer GPRS / SMS / voice calls and other information transmission functions, is widely used in Internet of things / vehicle / power environment testing and other fields.
What is a GPRS module?
GPRS module, also known as wireless data transmission module, in simple terms is to achieve TTL serial communication to GPRS wireless communication module. Using the phone SIM card and the operator's GPRS network to provide wireless long-distance data transmission.
The device using the GPRS module can interact with the server in a network-free, WIFI-free environment.
Advantage
Wide area coverage: GPRS in the country 34 provinces are well covered, it is the world's leading 2G communication standards. Basically in the phone can call the place can be through GPRS wireless Internet access;
Always online: as long as the activation of GPRS applications, will remain online, similar to the wireless line network services.
Charging: GPRS service is always on the line, but you do not have to worry about the cost problem; because only when the traffic generated traffic billing.
High-speed transmission: the current GPRS can support 85.6Kbps peak transmission rate, the theoretical peak transmission of up to 100 Kbps.
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;
SMT 42PIN