Product Overview ：Ebyte's E49 Series CMT2300A Wireless Module

In the field of Sub-1GHz IoT wireless communication, finding the optimal balance between performance, power consumption, and cost is an eternal challenge for developers. Based on the market-proven CMT2300A RF chip, Ebyte has launched a compact wireless module matrix covering mainstream power levels and frequency bands, aiming to provide "must-have" solutions for various remote data acquisition and control applications

The four new models introduced in this article all belong to the E49 series and share the high-performance CMT2300A core. However, they are precisely differentiated in two core dimensions: operating frequency band and transmit power, forming a clear selection matrix:

Core Positioning:

• E49-400M20S / E49-400M20S4: Standard-power, cost-effective main models for the 433/470MHz frequency band. With identical cores, their main differences lie in package size and antenna interface, providing options for PCB designs with different space and integration requirements.

• E49-900M20S: A standard-power model for the 868/915MHz frequency band, targeting overseas markets and meeting frequency regulations in Europe, North America, and other regions.

• E49-400M30S: A star model for long-distance, high-power applications. With a transmit power of 30dBm, it doubles the communication capability in the same frequency band, making it suitable for scenarios with strict distance requirements.

Functional Features: Hard Power Built for Industrial Applications

As "pure hardware" RF modules, all four models require an external MCU to drive them via the SPI interface, providing developers with maximum flexibility in underlying control. They share the following industrial-grade core features:

• Comprehensive Frequency Band and Rate Support: The modules cover a wide frequency range of 410-510MHz or 850-930MHz and support a wide data transmission rate range from 0.5Kbps to 300Kbps. Users can flexibly balance transmission distance and air rate according to project requirements.

• Software-Adjustable Transmit Power: Supports multi-level adjustable transmit power. Users can dynamically reduce power based on actual communication distance requirements, which is a key means to optimize overall power consumption and extend battery life.

• Excellent Receiving Sensitivity and Low Power Consumption: Based on the excellent receiving performance of the CMT2300A chip, combined with support for multiple modulation methods such as GFSK, OOK, and (G)MSK, the modules perform stably in complex environments. They also support low-power sleep mode, making them particularly suitable for battery-powered IoT terminals.

• Industrial-Grade Reliable Design: Wide operating voltage range, supporting 1.8V to 3.6V power supply. Operating temperature range of -40°C to +85°C, adaptable to harsh outdoor and industrial environments, ensuring long-term stable operation.

• Flexible Integration Methods: Compact SMD packages (stamp hole or IPEX antenna interface) are easy to integrate into various product PCBs, meeting miniaturization design requirements.

Application Scenarios: Covering Mainstream IoT Fields

With stable performance and flexible configuration, this series of modules can be widely used in:

• Smart Home and Industrial Sensing: Remote meter reading, environmental monitoring, smart irrigation, equipment status monitoring.

• Security and Alarm Systems: Wireless door sensors, smoke alarms, location tracking.

• Remote Control: UAV telemetry and remote control, industrial wireless remote controllers.

• Other Fields: Wireless game peripherals, healthcare products, automotive IoT applications.

The E49 series CMT2300A module matrix is a precise product layout by Ebyte on a mature technical route. It provides users with market-proven, reliable, and cost-effective "core" choices in two mainstream ISM frequency bands (433/470MHz and 868/915MHz) and two key power levels (20dBm and 30dBm).

For developers, choosing this series means choosing a low-risk, cost-effective wireless communication path. Whether building a sensor network covering hundreds of meters or needing a remote control link that can traverse several kilometers of complex terrain, you can find a clear answer in this "small but refined" matrix.