ESP8266 ESP-12S A9G GSM GPRS+GPS IOT NodeWiFi+Cellular + GPS tracking, all in one? Oh yes Introducing ESP-12S A9G GSM GPRS+GPS IOT Node, an all-in-one cellular phone module with WiFi module with that lets you add location-tracking, text, SMS and data to your project. This IOT node has both WiFi and GPRS support. That means it's perfect for just about any wireless or Internet-connected project.This is the ESP-12S A9G GSM GPRS+GPS IOT Node, which based on the ESP-12S and the cellular phone module A9G. TWO modules all are come from Ai-thinker. With built in USB and battery charging, it is a really IOT development board. It is very useful on your IOT project.At the IOT Node’s heart is an ESP8266 WiFi microcontroller clocked at 80 MHz and at 3.3V logic. This microcontroller contains a Tensilica chip core as well as a full WiFi stack. You can program the microcontroller using the Arduino IDE for an easy-to-run Internet of Things core. We wired up a CH340C USB-Serial chip that can upload code at a blistering 921600 baud for fast development time. It also has auto-reset so no noodling with pins and reset button pressings. The A9G can be used in a wide range of IoT applications and is ideal for IoT applications for home automation, industrial wireless control, wearable electronics, wireless location sensing devices, wireless location system signals and other IoT applications.