WIFI+GPRS DUAL MODULE A20

توضیحات

WIFI+GPRS DUAL MODULE A20:

A20Adapter board”Core module A20 is a GPRS and WiFi two-in-one module, but also supports plug-in Camera, WiFi chip using Shanghai Le Xin Information Technology ESP8285.

A20The GPRS part and WiFi part can be separated from a separate power supply, work alone, do not interfere with each other;

“A20″Support the following modes of operation:

1)Separate GPRS mode

In this mode, users only need to GPRS alone power, the use of MCU through the serial control GPRS part can;

2)Separate WiFi mode

The mode users only need to WiFi part of the power, the use of MCU through the serial port can control the WiFi part;

3)GPRS + WiFimode

In this mode, the user can use two serial ports to control the GPRS part and WiFi part respectively;

4)WiFiMaster MCU, control GPRS mode

In this mode, the user uses the WiFi part of the ESP8285 as the master, to control the GPRS part, because WiFi only a two-way serial port, this time users need to develop ESP8285 side of the program;

A20Adapter board through the DIP switch can adjust the A20 and WiFi serial port connection:

1.The following are the same as the “Separate GPRS and separate WiFi mode;

DIP switch to open 1,3, GPRS serial port will be connected to the pin, you can directly through the AT operation GPRS part and WiFi part;

2.The following are the same as the “ESP8285As the master, to operate the GPRS part;

DIP switch open 2,4,8266 IO13 and IO15 and GPRS AT serial port connected, thisCan beESP8285Can be operatedGPRSsection;

DIP switch 5,6 is to control whether WIFI_IO13 and IO15 are connected to the pin;

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WiFi + GPRS + CameraOf the combination of the way, is also the first attempt in the industry. The two technologies of the Internet of Things – WiFi and GPRS have their own advantages and disadvantages, are used in different scenarios, play the same role.

The combination of the three clever, so that its practicality greatly improved, expanding the application of more scenes. The new module “A20”, it has a fast, low power and powerful features, WiFi and GPRS two technologies such as seamless conversion, so that applied to outdoor monitoring, agricultural monitoring, industrial monitoring, smart home appliances, driving Test system, fingerprints face camera punch card machine, visual doorbell camera camera lights in many areas. Can be instant access to pictures, through WiFi or GPRS seamless switching transmission, as its application of the biggest bright spot. The seamless integration of different technologies, thus expanding the WiFi and GPRS traditional applications, it can be widely used in various consumer electronics products. This is also the letter in the field of science and technology in the field of the first successful listing of the fully integrated module, showing the letter can continue to burst from the innovation and vitality.

“A20″The use of half-hole process, through the standard SMT equipment to achieve rapid production module to provide customers with high reliability of the connection, especially for automation, large-scale, low-cost modern production methods.The adoption of ISO9001 international quality management system, from research and development operations sales of procurement warehouse production quality after-sales and other links to provide based on traceability management tools to provide you with high quality, low price, excellent service products.

Features:

LWiFi + GPRSCombo

LSize 22.80 × 19.80mm;

LOperating temperature -30°To + 80°;

LWorking voltage 3.3V-4.2V;

LStarting voltage> 3.4V;

LPower supply: DC 5V 1A;

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

LSupport China Mobile China Unicom 2G and the global GSM network;

LSupport serial and network communication;

LSupport SMS text messages;

LSupport camera, picture compression format: JPEG standard;

LImage resolution: VGA (640 * 480), QBGA (320 * 40), QQBGA (160 * 120), can passTooSerial command setting;

LSupport the transmission of pictures, the speed up to 16KB / S;

LSupport external 30 million pixel camera;

LGPRS Class 10;

LSensitivity

LBuilt-in ESP8285 WiFi chip, support WiFi chip secondary development;

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

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

LSupport ROHS, FCC, CE, CTA certification;

A20Transfer board dimensions

Features:

LWiFi + GPRSCombo

LSize 22.80 × 19.80mm;

LOperating temperature -30°To + 80°;

LWorking voltage 3.3V-4.2V;

LStarting voltage> 3.4V;

LPower supply: DC 5V 1A;

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

LSupport China Mobile China Unicom 2G and the global GSM network;

LSupport serial and network communication;

LSupport SMS text messages;

LSupport camera, picture compression format: JPEG standard;

LImage resolution: VGA (640 * 480), QBGA (320 * 40), QQBGA (160 * 120), can passTooSerial command setting;

LSupport the transmission of pictures, the speed up to 16KB / S;

LSupport external 30 million pixel camera;

LGPRS Class 10;

LSensitivity

LBuilt-in ESP8285 WiFi chip, support WiFi chip secondary development;

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

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

LSupport ROHS, FCC, CE, CTA certification;