The EBYTE EWD611 Series is a robust, industrial-grade wireless modem designed to handle demanding high-bandwidth applications. Operating in the 868MHz and 915MHz frequency bands with an impressive 33dBm (2W) transmit power, this full-duplex module seamlessly integrates both high-speed video and serial data transmission. Capable of speeds up to 16Mbps, it can simultaneously transmit up to four 1080p video streams alongside RS485 transparent data. With built-in PA (Power Amplifier), LNA (Low Noise Amplifier), and advanced star networking capabilities covering up to 2 km, the EWD611 is the ultimate solution for long-range video surveillance, intelligent control systems, and complex IoT networks.
Core Features
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High-Speed Data & Video: Achieves up to 16Mbps baud rates, supporting the simultaneous transmission of up to four 1080p HD video streams.
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Long-Range 33dBm Output: Equipped with a 2W transmitter and PA/LNA components to ensure a stable communication distance of up to 2 km under ideal conditions.
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Dual Interface Integration: Supports simultaneous transparent transmission over both Ethernet and RS485 serial ports for versatile equipment connectivity.
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Advanced Star Networking: Easily build robust local networks supporting up to 31 sub-nodes with simple master/slave mode switching and one-touch pairing.
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Full-Duplex Communication: Ensures seamless, low-latency continuous data flow without the bottleneck of half-duplex switching
Product Specifications
| Product Parameters | E611-900NW20S | EWD611-900NW20(485) | E611-900NW20D | E611-868NW33S | EWD611-868NW33(485) | E611-915NW33S | EWD611-915NW33(485) |
|---|---|---|---|---|---|---|---|
| Operating Voltage | 5/12V | 5/12V | 5/12V | 5/12/24V | 5/12/24V | 5/12/24V | 5/12/24V |
| Communication Level | 3.3V | – | 3.3V | 3.3V | – | 3.3V | – |
| Operating Temperature | -40~+85℃ | ||||||
| Operating Frequency | 902~928MHz | 863~873MHz | 902~928MHz | ||||
| Transmit Power | 20dBm | 33dBm | |||||
| Transmit Current | 500mA | 1100mA | |||||
| Receive Current | 84mA | 84mA | 84mA | 85mA | 85mA | 85mA | 85mA |
| Receiver Sensitivity | -107dBm | ||||||
| Communication Distance | 1000m | 2000m | |||||
| Max. Accessible Child Nodes | 31 | ||||||
| Communication Interface | UART/PHY | RS-485/Ethernet Port | UART/PHY | UART/PHY | RS-485/Ethernet Port | UART/PHY | RS-485/Ethernet Port |
| Package Type | SMD | – | DIP Type | SMD | – | SMD | – |
| Dimensions | 40×29mm | 66×68×21.6mm | 35×35mm | 50×39mm | 82×84×25mm | 50×39mm | 82×84×25mm |
| Antenna Interface | IPEX/Castellated Holes | SMA-K Connector | IPEX | IPEX/Castellated Holes | SMA-K Connector | IPEX/Castellated Holes | SMA-K Connector |
Product Manual Download
Customer Use Cases
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EWD611-868NW33(485): Smart Vineyard Monitoring & Security (Europe)
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Industry & Environment: Agricultural IoT and Estate Security in rural Europe.
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Usage: A large vineyard operator needs to monitor both soil conditions and perimeter security. They deploy the EWD611-868NW33(485) because it complies with local 868MHz regulations. The RS485 interface connects to soil moisture sensors, while the Ethernet port connects to high-definition IP cameras. The 16Mbps bandwidth allows the simultaneous transmission of real-time 1080p security footage and critical sensor data back to the central farmhouse 1.5 km away, entirely bypassing the need for expensive cellular data plans.
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EWD611-915NW33(485): Remote Mining Site Surveillance (North America/Australia)
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Industry & Environment: Mining and Heavy Industrial Operations in harsh, open-pit environments.
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Usage: Safety managers at an open-pit mine must monitor heavy machinery operations and environmental data in real time. They utilize a star network configuration with the EWD611-915NW33(485), connecting up to 31 sub-nodes (excavators and perimeter posts) to a central master node. The robust 33dBm signal ensures steady links despite the dusty and dynamic environment, while the full-duplex communication guarantees zero latency when triggering emergency shut-off commands via the RS485 port alongside the live video feeds.
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FAQ
Q1: Can the EWD611 series transmit video and serial data at the same time?
A: Yes. The module features integrated video and data transmission. It supports simultaneous transparent transmission over both its Ethernet and RS485 serial ports. Thanks to its 16Mbps bandwidth, you can comfortably transmit up to four 1080p video streams while actively sending RS485 sensor data or control commands.
Q2: What is the maximum communication distance of these modules?
A: Under ideal, line-of-sight conditions, the built-in 33dBm (2W) transmitter paired with PA and LNA components allows for a maximum transmission distance of up to 2 kilometers. Please note that actual range will vary depending on antenna placement, environmental obstacles, and electromagnetic interference.
Q3: How many devices can I connect in a single network?
A: The EWD611 series supports advanced star-shaped networking. A single master node can connect with up to 31 sub-nodes. Switching between master and slave modes is incredibly simple, and the system features one-touch pairing for rapid deployment.
Q4: How do I configure the module parameters?
A: Configuration is straightforward using standard AT commands. You can adjust frequency, network ID, node roles, and transmission settings via the serial interface, making it highly adaptable for automated system integrations or PC-based setup tools.
Q5: Which model should I choose: 868MHz or 915MHz?
A: Your choice depends on the local radio frequency regulations of your deployment area. The 868MHz band is generally designated for use in Europe and certain parts of Asia, while the 915MHz band is the standard for North and South America, as well as Australia. Both models offer identical performance specifications.
