A20 Chips Wifi+GPRS Module

product information
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? Size 22.80 × 19.80mm;
?? Operating temperature -30 ° C to +80 ° C;
?? Operating voltage 3.3V-4.2V;
?? Start voltage> 3.4V;
?? Power: DC 5V 1A;
?? Support GSM / GPRS quad band, including 850,900,1800,1900MHz;
?? Support China Mobile China Unicom 2G and global GSM network;
?? Support serial port and network communication
?? Support SMS
?? Support camera, image compression format: JPEG standard;
?? Image resolution: VGA (640 * 480), QBGA (320 * 40), QQBGA (160 * 120) can be set through the serial port instructions;
?? Support transfer pictures, the maximum speed of 16KB / S;
?? Support external 30 megapixel camera;
?? GPRS Class 10;
?? Sensitivity <-105;
?? Built-in ESP8285 WiFi chip, support WiFi chip secondary development;
?? Support GPRS data services, the highest data rate, download 85.6Kbps, upload 42.8Kbps;
?? Support digital audio and analog audio, support HR, FR, EFR, AMR voice coding;
Support ROHS, FCC, CE, CTA certification