M5 Stack COM.LTE Data Module (A7600C)

The M5 Stack COM.LTE Data Module (A7600C) is a compact LTE cellular communication module designed for IoT and embedded systems requiring high-speed mobile data connectivity. Professional engineers and IoT developers integrate this module into remote monitoring systems, industrial telemetry devices, and connected applications requiring reliable 4G LTE coverage across India and global networks. This module solves the critical challenge of enabling real-time data transmission in locations where WiFi infrastructure is unavailable or unreliable, providing a robust cellular backbone for mission-critical IoT deployments.

Product Overview

The A7600C is a multi-band LTE Cat-1 module that operates on frequencies compatible with Indian telecom operators including Jio, Airtel, Vodafone, and BSNL. The module features integrated GNSS positioning, supporting GPS, GLONASS, Galileo, and BeiDou for precise location tracking in IoT applications. It communicates with M5 Stack microcontroller boards via UART serial interface with AT command protocol, enabling straightforward integration into existing embedded systems. The module includes built-in TCP/IP stack, supporting both IPv4 and IPv6 protocols, which eliminates the need for external network processing and reduces overall system complexity.

What distinguishes the A7600C is its optimized power consumption architecture, delivering extended battery life in portable IoT devices through intelligent sleep modes and power management features. The module integrates a SIM card slot supporting standard SIM, Micro SIM, and Nano SIM cards, providing flexibility for different deployment scenarios. With dimensions optimized for M5 Stack's modular ecosystem, it stacks directly onto M5 Core or M5 CoreS3 units without requiring additional breakout boards or adapters. The industrial-grade design ensures stable operation across temperature ranges from -40°C to +85°C, making it suitable for outdoor and harsh environment deployments.

Key Specifications

Specification	Details
Product Type	LTE Cat-1 Cellular Data Module
Brand	M5 Stack
Model	A7600C
Origin	Original/Authentic
Warranty	7 days on manufacturing defects
Shipping	1-5 days from Bengaluru
Delivery	7-8 days across India
Support	24/7 via Email and WhatsApp
LTE Bands Supported	Band 1, 3, 5, 7, 8, 20, 32, 40 (compatible with Indian operators)
Data Speed	Download up to 10 Mbps, Upload up to 5 Mbps
Interface	UART (Serial) with AT Command Protocol
GNSS Support	GPS, GLONASS, Galileo, BeiDou
SIM Card Slot	Supports Standard, Micro, and Nano SIM
Operating Temperature	-40°C to +85°C
Power Supply	3.3V to 4.2V DC
Typical Current Draw	Idle: 2mA, Active: 100-200mA
Dimensions	Compact M5 Stack module form factor

Key Features

• Multi-band LTE Cat-1 connectivity supporting all major Indian telecom operators with seamless handover between networks
• Integrated quad-band GNSS receiver enabling precise location tracking for GPS-dependent IoT applications without external positioning modules
• Low-power design with intelligent sleep modes consuming as little as 2mA in idle state, extending battery life in portable and remote deployments
• Built-in TCP/IP stack with IPv4 and IPv6 support eliminating the need for external network processing and reducing firmware complexity
• Direct M5 Stack compatibility with UART interface and AT command protocol for rapid prototyping and integration into existing M5 projects
• Industrial-grade temperature range from -40°C to +85°C ensuring reliable operation in outdoor and harsh environmental conditions
• Flexible SIM support accepting Standard, Micro, and Nano SIM cards for deployment flexibility across different device form factors

Applications and Use Cases

• Remote environmental monitoring systems tracking temperature, humidity, and air quality in rural areas using cellular backhaul where WiFi is unavailable
• Industrial IoT telemetry for predictive maintenance in manufacturing facilities, transmitting sensor data from machinery to cloud analytics platforms via LTE
• GPS-enabled asset tracking and fleet management systems for logistics companies monitoring vehicle location and status in real-time
• Smart agriculture IoT devices collecting soil moisture, weather, and crop health data from distributed field sensors with cellular connectivity
• Emergency response systems and security monitoring devices requiring reliable mobile connectivity in remote locations without infrastructure
• Smart metering and utility monitoring systems for water, electricity, and gas distribution networks requiring cellular data transmission

How to Use

Begin by inserting a compatible SIM card into the module's SIM slot, ensuring the card is activated with an active data plan from your chosen Indian telecom operator. Mount the A7600C module onto your M5 Core or M5 CoreS3 development board using the M5 Stack connector, which automatically establishes the UART communication link. Power the system with appropriate 3.3V to 4.2V supply, and the module will automatically initialize and search for available LTE networks.

Use the Arduino IDE or MicroPython environment to send AT commands through the UART interface to the module. Essential commands include AT+CPIN to verify SIM status, AT+COPS to select network operator, AT+CGACT to activate PDP context, and AT+CIPSTART to establish TCP connections. For GNSS functionality, enable positioning with AT+CGNSPWR and retrieve location data using AT+CGNSINF. The module responds with standard AT command responses, allowing you to parse connectivity status, signal strength, and location coordinates directly in your application firmware. Refer to the comprehensive AT command manual and M5 Stack documentation for detailed protocol specifications and example code.

Frequently Asked Questions

Is the A7600C module compatible with all Indian telecom operators?

Yes, the A7600C supports LTE bands 1, 3, 5, 7, 8, 20, 32, and 40, which cover all major Indian telecom operators including Jio, Airtel, Vodafone, and BSNL. The module automatically searches for and connects to available networks in your area. However, confirm your operator's specific LTE band support in your region before deployment.

What is the maximum data throughput and latency of this module?

The A7600C achieves download speeds up to 10 Mbps and upload speeds up to 5 Mbps as a Cat-1 LTE module. Typical latency ranges from 50-100ms depending on network congestion and signal quality. These specifications are suitable for telemetry, monitoring, and moderate data transmission applications, though not ideal for real-time video streaming or high-bandwidth applications.

How long does the module take to acquire GPS position?

The A7600C with integrated GNSS receiver typically achieves initial position fix within 30-60 seconds in clear sky conditions (cold start). Subsequent acquisitions (warm start) take 5-15 seconds. In urban canyons or indoor locations with weak satellite signals, acquisition time may extend to several minutes. Using assisted GPS with network-based positioning can significantly reduce acquisition time.

Can I use this module with M5 Stack boards other than M5 Core?

The A7600C is designed for M5 Stack's modular ecosystem and works with any M5 board featuring the standard M5 connector including M5Core, M5CoreS3, M5Core2, and compatible M5 expansion boards. Ensure your board has available UART pins and sufficient power supply capacity to support the module's 100-200mA active current draw.

What are the power consumption specifications for different operating modes?

The module consumes approximately 2mA in idle sleep mode, 50-100mA during network search, and 100-200mA during active data transmission. Peak current can reach 300mA during LTE connection establishment. For battery-powered applications, implement intelligent power management using the module's sleep modes to extend operational time significantly.

When will I receive my order?

Orders are dispatched within 1-5 business days from our Bengaluru warehouse. Delivery takes 7-8 days to most locations across India.

What is your return and warranty policy?

We offer a 7-day return policy on manufacturing defects only. Contact support within 7 days of receipt for free replacement or full refund. Not applicable for user damage or misuse.

Are bulk discounts available?

Yes, wholesale pricing for orders of 10 or more units. Contact our sales team via WhatsApp or email for a customized bulk quote.

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• Returns: 7-day return policy on manufacturing defects only

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