The Ebyte EWM201 series is an advanced wireless voice intercom module and development board supporting 20dBm and 30dBm output power options across 868MHz and 915MHz frequency bands, designed for robust digital intercom and real-time voice transmission applications.
| Core Parameter | Technical Specification |
|---|---|
| Product Series | Ebyte EWM201 Series |
| Frequency Bands | 868MHz / 915MHz (Sub-GHz) |
| RF Output Power | 20dBm / 30dBm / 33dBm options |
| Application Type | Digital Intercom & Wireless Voice Transmission |
| Hardware Interface | Development Board & Module Configurations |
Product Selection Guide
Selection Notice: Please choose the appropriate frequency band (433MHz, 470MHz, or 900MHz) and RF power level (20dBm, 30dBm, or 33dBm) according to your regional regulatory requirements and communication distance needs.
| SKU Model | Frequency Band | RF Power | Included Accessories | Unit Price (USD) |
|---|---|---|---|---|
| EWM201-433A20S | 433MHz | 20dBm | Module Only | $6.76 |
| EWM201-470A20S | 470MHz | 20dBm | Module Only | $7.12 |
| EWM201-470A30S | 470MHz | 30dBm | Module Only | $9.10 |
| EWM201-470A33S | 470MHz | 33dBm | Module Only | $7.12 |
| EWM201-900A20S | 900MHz | 20dBm | Module Only | $7.12 |
| EWM201-900A30S | 900MHz | 30dBm | Module Only | $9.10 |
| EWM201-900A33S | 900MHz | 33dBm | Module Only | $7.12 |
| EWT201-900A20S | 900MHz | 20dBm | Rubber Ducky Antenna + USB Cable | $19.15 |
| EWT201-900A30S | 900MHz | 30dBm | Rubber Ducky Antenna + USB Cable | $22.85 |
Key Features & Advantages
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High-Performance RF Architecture: Engineered with robust output power variants up to 33dBm to ensure long-distance, stable link budgets in complex industrial RF environments.
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Low-Latency Digital Intercom: Optimized for real-time digital voice transmission, minimizing acoustic delay for seamless peer-to-peer communication.
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Flexible Development Support: Offers both standalone bare modules and complete development kits equipped with matching antennas and USB interfaces for rapid prototyping.
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Multi-Band Options: Available across multiple Sub-GHz frequencies (433MHz, 470MHz, 868MHz, 915MHz) to comply with global wireless regulations.
Industrial Installation & Wiring
The EWM201 module features standard stamp/SMD pad footprints suitable for surface-mount PCB integration, while development board kits support standard USB serial connectivity and external rubber ducky antenna attachments for quick bench testing. (Note to operators: Insert actual hardware setup and wiring physical diagram here.)
Practical Application Scenarios
1. Industrial Plant Intercom Terminals
Deployed in noisy manufacturing environments and heavy industrial plants, the module enables crystal-clear half-duplex or full-duplex digital voice communication between control rooms and workshop operators over long distances.
2. Smart Mining and Underground Tunnel Communications
Utilizing Sub-GHz propagation characteristics, the EWM201 penetrates obstacles and maintains reliable wireless voice links in complex underground shafts where traditional cellular signals fail.
3. Remote Agricultural Irrigation Station Dispatch
Integrated into remote farming monitoring equipment, it allows field technicians to execute voice check-ins and coordinate operational commands directly across sprawling agricultural acreages.
4. Construction Site Safety Intercom Systems
Embedded into portable safety boxes or handheld contractor equipment, it delivers dependable point-to-point voice alerts and multi-party coordination on active multi-story construction sites.
5. Warehouse Logistics Headset and Intercom Nodes
Incorporated into automated logistics hubs, the module facilitates instant voice communication between warehouse floor pickers and centralized dispatch stations to optimize workflow efficiency.
FAQ Section
1. What is the typical communication range of the EWM201 series?
The communication distance varies depending on the selected RF output power (20dBm, 30dBm, or 33dBm), antenna gain, and environmental obstructions, but Sub-GHz propagation allows it to achieve extensive line-of-sight coverage suited for industrial deployments.
2. Does the module support half-duplex or full-duplex switching?
Yes, the EWM201 series supports flexible half-duplex and full-duplex voice switching configurations, configurable via software parameters to suit specific application demands.
3. What is included in the development board bundles?
Selected SKUs (such as EWT201-900A20S and EWT201-900A30S) include the core wireless module pre-integrated with a matching rubber ducky antenna and a USB cable for immediate out-of-the-box evaluation and testing.
4. How do I select between 868MHz and 915MHz frequency variants?
Selection depends on regional regulatory compliance; 868MHz is typically utilized for European ISM bands, while 915MHz is tailored for North American and specific global markets.
5. Are schematics and firmware configuration tools available for developers?
Yes, comprehensive technical documentation, AT command sets, user manuals, and configuration software can be retrieved directly from the download section of the Ebyte official platform.
