Product Overview
The Tarangify CoreX-S3 GSM is a powerful IoT and embedded development platform that combines the high-performance ESP32-S3-N16R8 microcontroller with the SIMCom A7672X 4G LTE Cat-1 GSM module. Designed for developers, engineers, startups, and industrial applications, the board delivers reliable cellular connectivity, GNSS positioning, audio capabilities, battery operation, and extensive GPIO expansion in a compact form factor.
Featuring 16MB Flash, 8MB PSRAM, Wi-Fi, Bluetooth LE 5.0, and 4G LTE connectivity, the CoreX-S3 GSM is ideal for GPS tracking, remote monitoring, industrial automation, smart agriculture, telematics, asset tracking, and IoT deployments.
Whether you’re prototyping a new product or deploying a field-ready solution, the CoreX-S3 GSM provides everything needed to accelerate development and reduce time to market.
Key Features
High-Performance ESP32-S3 Platform
- ESP32-S3-N16R8 Dual-Core Xtensa LX7 Processor
- Up to 240 MHz CPU Clock
- 16MB Flash Memory
- 8MB PSRAM
- Wi-Fi 2.4GHz (802.11 b/g/n)
- Bluetooth LE 5.0
Cellular Connectivity
- SIMCom A7672X 4G LTE Cat-1 Module
- LTE Data Communication
- Voice Call Support
- SMS Messaging Support
- 2G GSM Fallback Support (Region Dependent)
Integrated GNSS Positioning
- GPS
- GLONASS
- BeiDou
- Dedicated GNSS Antenna Connector
Audio Support
- Onboard MEMS Microphone
- Speaker Output Connector
- Suitable for Voice Alerts, Calling Devices, and Audio Applications
Flexible Power Options
- USB Type-C Power Input
- 3.7V LiPo Battery Connector
- Onboard Battery Charging Circuit
- Battery Voltage Monitoring via GPIO12
Rich I/O Expansion
- 40-Pin GPIO Header
- Access to Multiple ADC, UART, SPI, I2C, PWM, and GPIO Functions
- Dual 3.3V Power Outputs
- Dedicated 5V Output Pin
User Interface Features
- WS2812B RGB Status LED
- Power Status LED
- Network Status LED
- Ring Indicator LED
- Charging Status LED
- RESET Button
- BOOT Button
- User Button (GPIO41)
- GSM ON/OFF Button
Technical Specifications
| Parameter | Specification |
|---|---|
| Product Name | Tarangify CoreX-S3 GSM |
| SKU | T-CORE-S3-GSM |
| MCU | ESP32-S3-N16R8 |
| Flash Memory | 16MB |
| PSRAM | 8MB |
| Wi-Fi | 802.11 b/g/n |
| Bluetooth | BLE 5.0 |
| Cellular Module | SIMCom A7672X |
| Network | 4G LTE Cat-1 |
| GNSS | GPS / GLONASS / BeiDou |
| SIM Type | Nano SIM (4FF) |
| USB Interface | USB Type-C |
| Battery Support | 3.7V LiPo |
| RGB LED | WS2812B |
| GPIO Header | 20×2 (40 Pins) |
| Operating Voltage | 5V USB-C or 3.7V LiPo |
| Board Version | V1.0 |
Applications
- GPS Tracking Systems
- Fleet Management Solutions
- Vehicle Tracking Devices
- Remote Industrial Monitoring
- Smart Agriculture Systems
- Smart Energy Monitoring
- IoT Data Loggers
- Cellular Sensor Nodes
- Emergency SOS Devices
- Voice Notification Systems
- Smart City Applications
- Asset Tracking Solutions
Package Contents
- 1 × Tarangify CoreX-S3 GSM Development Board
- 1 × LTE/GSM Antenna
- 1 × GNSS/GPS Antenna
- 1 × 20×2 Male Header
- 1 × 20×2 Female Header
Note: USB Type-C cable, Nano SIM card, and LiPo battery are not included.
Important Notes
- Nano SIM card holder is located on the rear side of the PCB.
- External GSM and GNSS antennas are required for best performance.
- Compatible with Arduino IDE, PlatformIO, and ESP-IDF.
- GPIO10, GPIO11, and GPIO13 are internally connected to the A7672X module. Review schematics before repurposing these pins.
- Designed and Manufactured in India by Tarangify.
Why Choose Tarangify CoreX-S3 GSM?
The CoreX-S3 GSM combines cellular communication, GNSS positioning, audio functionality, battery operation, and ESP32-S3 processing power into a single compact platform. This significantly reduces development time and hardware complexity, enabling faster prototyping and reliable product deployment for modern IoT applications.
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