The Ebyte NA611 is a dual-band Wi-Fi serial server designed for bi-directional RS485 to Wi-Fi data conversion, supporting IEEE 802.11a/b/g/n (2.4GHz and 5.8GHz) standards with industrial DC 8-28V power supply in a compact 92x66x30mm housing for reliable wireless networking of serial devices and PLCs.
| Technical Parameter | NA611 Specification | Remarks / Details |
|---|---|---|
| Product Type | Dual-Band Serial to Wi-Fi Server | Bi-directional RS485 to Wi-Fi transparent transmission |
| Wi-Fi Standards | IEEE 802.11 a/b/g/n Dual-Band | Operates on 2.4 GHz and 5.8 GHz frequency bands |
| Hardware Communication Interface | Industrial RS485 Bus | Connects directly to PLCs, sensors, and meters |
| Operating Power Voltage | DC 8V to 28V Wide Range | Suitable for standard 12V and 24V industrial power supplies |
| Enclosure Dimensions | 92 x 66 x 30 mm | Compact industrial form factor for cabinet integration |
| Device Weight | 139 g (plus or minus 5 g) | Lightweight housing for wall or DIN-rail mounting |
| Parameter name | Parameter value |
|---|---|
| working voltage | DC 8～28V |
| Wireless standard | 802.11 a/b/g/n |
| Operating frequency band | 2.412～2.472GHz/5.180～5.825GHz |
| Working mode | AP/STA/P2P |
| Network protocol | TCP/UDP/DHCP/DNS/MQTT/HTTP |
| Security mechanism | WEP/WPA/WPA2 |
| collocation method | AT+UDP+HTTP |
| Baud rate | 300-460800 |
| Data bit | 7/8 |
| Stop bit | 1 |
| Check bit | None/Odd/Even |
| Power interface | 5.08Industrial wiring terminal |
| Antenna interface | SMA-K（External thread inner hole） |
| Dimensions(mm) | 92*66*30 |
| working temperature(℃) | -40~85 |
Practical Application Scenarios
1. Dual-Band Wireless Retrofit for Industrial PLC Control Cabinets
In automated manufacturing floors where laying physical Ethernet cables is costly or impractical, legacy PLCs with RS485 interfaces require real-time wireless networking. The NA611 connects to the PLC RS485 bus and routes telemetry over the less-congested 5.8GHz Wi-Fi spectrum (802.11a/n). This avoids heavy 2.4GHz industrial co-channel interference from nearby Bluetooth devices and hand-held terminals, ensuring continuous Modbus TCP to Modbus RTU polling with minimal packet loss.
2. High-Density Photovoltaic Inverter Monitoring and Smart Solar Plants
Solar farms feature long arrays of string inverters that use RS485 daisy-chain loops to gather generation metrics. By deploying the NA611 at each inverter junction box, field technicians convert RS485 data streams into 802.11a/b/g/n Wi-Fi signals powered by standard DC 24V bus rails. The dual-band wireless uplink transmits power generation telemetry back to the central SCADA station without expensive trenching or wiring.
3. Automated Building Management and Energy Sub-Metering Networks
Commercial buildings require centralized energy data collection from distributed RS485 power meters and HVAC actuators. The NA611 operates across a wide DC 8-28V voltage range, allowing direct integration into existing electrical panels. It establishes a dual-band Wi-Fi gateway backhaul, enabling facility managers to query RS485 Modbus meters remotely through enterprise Wi-Fi networks without disrupting building aesthetics or wall structures.
FAQ Section
1. What advantages does 5.8GHz Wi-Fi support offer over traditional 2.4GHz serial servers in industrial settings?
The 2.4GHz frequency band is often crowded with heavy RF noise from industrial Bluetooth devices, wireless sensors, and microwave equipment, leading to high latency and packet drops. The NA611 supports dual-band 802.11a/b/g/n (2.4GHz and 5.8GHz). Operating on 5.8GHz provides significantly more non-overlapping channels and higher signal bandwidth, ensuring stable, low-latency transmission for critical RS485 control traffic.
2. How does the wide input voltage specification simplify cabinet wiring for field engineers?
The NA611 supports an industrial-grade input voltage range of DC 8V to 28V. This allows control system integrators to tap power directly from standard industrial 12V or 24V DC bus rails inside control cabinets without adding extra step-down voltage regulators or external AC adapters, simplifying overall system design.
3. Can the NA611 be deployed as both a Wi-Fi Access Point (AP) and Station (STA)?
Yes, the NA611 serial server supports versatile Wi-Fi networking modes including AP mode, Station mode, and AP+STA mode. In Station mode, it joins existing factory enterprise Wi-Fi networks. In AP mode, it acts as a standalone wireless hotspot, allowing maintenance technicians to connect laptops or tablets directly to the RS485 interface for local parameter configuration and troubleshooting.
