LILYGO T‑A7670E/G/SA R2 | Q334 Development Board
The LILYGO T‑A7670E/G/SA R2 is a high-performance all-in-one development board that combines an ESP32 microcontroller with a SIM-A7670 series 4G LTE/GSM/GPRS module and optional GPS/GNSS support. Designed for IoT, GPS tracking, remote monitoring, and portable electronics projects, this board gives you Wi-Fi, Bluetooth, cellular, and GPS capabilities in a single compact package.
It features a built-in 18650 battery holder with charging circuit, external antenna support, microSD slot, and rich GPIO options — perfect for building mobile IoT devices, data loggers, vehicle trackers, and smart automation systems. Its robust design and flexible connectivity make prototyping faster and easier.
Key Features
Dual-core ESP32 with Wi-Fi and Bluetooth connectivity
SIM-A7670 series 4G LTE / GSM / GPRS cellular module
Optional GPS/GNSS support with external antenna
Built-in 18650 battery holder with charging and protection
USB-C port for programming and power
MicroSD card slot for data storage
Wide I/O support: GPIO, ADC, DAC, UART, SPI, I²C, capacitive touch
Specifications
Microcontroller: ESP32-WROVER, dual-core, 240 MHz
Flash / PSRAM: 4 MB + 8 MB
Cellular: SIM-A7670 series (LTE Cat 1 / GSM / GPRS / EDGE)
Wireless: Wi-Fi 802.11 b/g/n, Bluetooth classic + BLE
Input Voltage: 4.4 V – 6 V DC
Battery: 1× 18650 Li-ion (built-in holder)
Dimensions: ~111 × 34 × 19 mm
Antennas: External LTE & GPS support
Applications
IoT remote sensors and telemetry
GPS vehicle tracking
Environmental data logging and monitoring
Smart agriculture and automation systems
Mobile or off-grid electronics projects