A20 SMD Module that combine GPRS and WiFi, also it supports camera connection.
Support GPRS and wifi two main technology, seamless switch in these two.
Based on ESP8266 (or 8285) wifi IC.
Serial UART communication from MCU to A20, or camera data from A2; A20 data transmission via GPRS or wifi to user.
GPRS and Wifi can power alone, and work alone.
Support four working mode, GPRS mode, wifi mode, both mode, wifi control GPRS and camera mode. use esp8266/8285 secondary uart port, this need develop your own program.
Semi-hole technology, through the standard SMT equipment to achieve the rapid production module for customers with high reliability of the connection, especially for automation, large-scale, low-cost modern production methods.
Outdoor monitoring, agricultural monitoring, industrial monitoring, intelligent home appliances, driving test system, Fingerprint Face Camera Punching machine, video doorbell camera camera lights in many fields.
Can get pictures at the same time, through WiFi or GPRS seamless switch transmission, become the biggest bright spot of its application.
WiFi + GPRS Combo;
Size 22.80 × 19.80mm;
Operating temperature -30 ℃ to + 80 ℃;
Operating voltage 3.3V-4.2V;
Boot voltage> 3.4V;
Power supply: DC 5V 1A;
Support GSM / GPRS four frequency bands, including 850, 900, 1800, 1900MHz;
Support global GSM network;
Support serial port and network communication;
Support SMS messages;
Support camera, picture compression format: JPEG standard;
Image resolution: VGA (640 * 480), QBGA (320 * 40), QQBGA (160 * 120), can be set through the serial port instruction;
Support for transmission of pictures, the maximum speed of 16KB / S;
Support for external 300,000 pixel camera;
GPRS Class 10;
Built-in ESP8285/8266 WiFi chip, support WiFi chip secondary development;
Support GPRS data services, the maximum data rate, download 85.6Kbps, upload 42.8Kbps;
Support for digital audio and analog audio, support HR, FR, EFR, AMR voice coding;