Resources:
7Semi EG800AK LTE 4G Cat-1 bis Mini Industrial Modem with USB-C - Quectel EG800AK-CN, 10 Mbps Download, UART and AT Command Interface for ESP32, STM32, Raspberry Pi, and Embedded IoT Systems
The 7Semi EG800AK is a compact LTE 4G Cat-1 bis industrial modem board built around the Quectel EG800AK-CN modem IC, providing reliable cellular connectivity for IoT, industrial automation, telemetry, remote monitoring, asset tracking, and embedded connectivity applications in a developer-friendly 62 x 40mm form factor with four mounting holes for enclosure and panel integration. The Quectel EG800AK-CN is a Cat-1 bis single-antenna LTE modem supporting LTE-FDD bands B1, B3, B5, and B8 alongside LTE-TDD bands B34, B38, B39, B40, and B41, covering the frequency band allocation used by major Indian and Chinese LTE operators for broad carrier compatibility across both regions without band-specific modem variant selection. Cat-1 bis delivers download speeds up to 10 Mbps and upload speeds up to 5 Mbps - sufficient bandwidth for cloud-connected IoT data streaming, industrial gateway uplink, OTA firmware updates, and real-time telemetry transmission without the hardware cost and power consumption of Cat-4 or higher modem solutions in applications where peak throughput is not the primary system requirement.
The board is designed for straightforward integration with the full range of popular embedded development platforms, including ESP32, STM32, RP2040, Arduino, Raspberry Pi, and Linux SBCs, exposing UART TX and RX serial communication pins for direct modem control via the standard AT command set without USB-to-serial adapter hardware between the host microcontroller and the modem. A USB Type-C connector provides both power supply input and modem USB communication for host PC development, firmware flashing, and diagnostic access, with onboard power regulation circuitry converting the USB-C input to the modem's required supply rails without external regulator components. Hardware control is extended through dedicated KEY and RESET control pins for programmatic modem power-on, power-off, and reset from the host microcontroller without manual physical button interaction, enabling fully automated modem lifecycle management in unattended IoT and industrial deployment scenarios. A Nano SIM card slot, U.FL and IPEX LTE antenna connector, network status indicator LEDs, and power status LED complete the hardware feature set, with an external LTE antenna included in the kit for immediate deployment without additional antenna sourcing.
Key Features
- Modem IC: Quectel EG800AK-CN LTE Cat-1 bis single-antenna modem for reliable 4G LTE connectivity in India and China operator frequency band coverage
- LTE Category: Cat-1 bis for 10 Mbps download and 5 Mbps upload speeds suited to IoT, telemetry, industrial gateway, and cloud-connected monitoring applications
- LTE-FDD Bands: B1, B3, B5, B8 for FDD frequency band coverage across major Indian and Chinese LTE operators
- LTE-TDD Bands: B34, B38, B39, B40, B41 for TDD frequency band coverage across major Indian and Chinese LTE operators
- USB Type-C Interface: USB-C connector for power supply input and modem USB communication for host PC development, firmware flashing, and diagnostics
- UART Communication: TX and RX serial pins for direct AT command modem control from ESP32, STM32, RP2040, Arduino, Raspberry Pi, and custom embedded platforms
- AT Command Interface: Standard Quectel AT command set for modem control, network registration, data connection management, and status query from the host microcontroller
- Nano SIM Card Slot: Onboard Nano SIM slot for standard operator SIM card insertion without external SIM holder or adapter
- U.FL and IPEX Antenna Connector: LTE antenna connection via U.FL and IPEX connector with external LTE antenna included for immediate deployment
- KEY Control Pin: Dedicated modem power-on and power-off control pin for programmatic modem lifecycle management from the host microcontroller
- RESET Control Pin: Hardware reset pin for programmatic modem reset without manual physical intervention in unattended deployments
- Onboard Power Regulation: Integrated power regulation circuitry converts USB-C input to modem supply rails without external regulator components
- Network Status LEDs: Onboard network status indicator LEDs for visual LTE registration and data connection status confirmation
- Power Status LED: Onboard power indicator LED for visual modem power state confirmation
- 4 Mounting Holes: Four corner mounting holes for secure panel, enclosure, and DIN rail adapter integration in industrial deployments
- Compact Form Factor: 62 x 40mm PCB for integration into compact IoT device enclosures, industrial panel mounts, and embedded system housings
- External LTE Antenna Included: LTE antenna included in kit for immediate deployment without additional antenna sourcing
Applications
- ESP32, STM32, RP2040, Arduino, and Raspberry Pi IoT builds requiring LTE Cat-1 bis 4G cellular connectivity via UART AT command interface without USB-to-serial adapter hardware
- Industrial automation and remote monitoring systems requiring reliable 4G LTE uplink with programmatic modem lifecycle management via KEY and RESET control pins
- Asset tracking and telemetry builds in India and China, requiring Quectel EG800AK-CN LTE-FDD and LTE-TDD multi-band operator coverage without band-specific modem selection
- Cloud-connected IoT device builds requiring 10 Mbps LTE download for OTA firmware updates, real-time sensor data streaming, and bidirectional cloud communication
- Industrial gateway builds requiring a compact 62 x 40mm panel-mount 4G modem with 4 mounting holes for enclosure integration and USB-C development access
- Unattended remote IoT and industrial deployments requiring automated modem power-on, reset, and connection management via dedicated KEY and RESET hardware control pins.
