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Item #:
108652285
JMT Elfin-EW40B-0 Gateway RS232 to Wi-Fi & Blueandtooth Serial Server with External Antenna Support STA/AP/AP+STA Modbus RTU/TCP (Server only)
83% of respondents would recommend this to a friend
Item #:
108652285
WST 78
Price Details
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*All items will import from US
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Imported from USA store
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Order now and get it around Wednesday, October 21
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Elfin server provides RS232 interface to Wi-Fi connectivity, integrating all serial to Wi-Fi functionality in a compact size.
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Note: Step Down Voltage Transformer required for using electronics products of US store (110-120). Recommended power converters Buy Now.
What Stands Out
Versatile Connectivity
Supports RS232 to Wi-Fi and Bluetooth connectivity, allowing seamless integration with various devices and networks, making it ideal for diverse applications.
External Antenna Support
Equipped with external antenna support for enhanced signal strength and range, ensuring reliable communication in challenging environments compared to standard solutions.
Modbus Protocol Compatibility
Specifically designed for Modbus RTU/TCP applications, enabling effective communication with industrial devices, thus streamlining integration and data exchange in automation systems.
Product Details
| Compatible Devices | Desktop |
| Connector Type | RS232, Wi-Fi & Bluetooth |
| Color | Server only |
| Number of Items | 1 |
| Brand | JMT |
| Manufacturer | HF |
| Mfr Part Number | F53740 |
| Item Weight | 0.5 lbs (230 grams) |
Who Should Buy?
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Industrial Automation
Ideal for connecting industrial devices to Wi-Fi networks for remote monitoring and control in factories.
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IoT Developers
Perfect for developers building IoT applications that require reliable serial communication over Wi-Fi or Bluetooth.
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Technical Support Teams
Suitable for tech teams needing to integrate legacy RS232 devices into modern network infrastructures seamlessly.
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Home Users
May not be suitable for casual home users looking for simple wireless connectivity solutions.
Product Description
JMT Elfin-EW40B-0 Gateway RS232 to Wi-Fi & Blueandtooth Serial Server with External Antenna Support STA/AP/AP+STA Modbus RTU/TCP (Server only)
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Customer Questions & Answers
-
Question:
What is the maximum serial speed supported by the Elfin server?
Answer: The Elfin server supports a maximum serial speed of up to 230400 bps. -
Question:
Can the Elfin server be configured remotely?
Answer: Yes, the Elfin server supports remote configuration and monitoring through the IOT service. -
Question:
What power supply range is compatible with the Elfin server?
Answer: The Elfin server is compatible with a wide power supply range of 5~36V.
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Pros
- Easy to set up
- Good wireless range
- Supports multiple protocols
- Reliable performance
- Compact and lightweight design
Cons
- Might need occasional firmware updates.
Platform Trust & Buyer Confidence
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Jazz
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“Easy to use and always helpful and sorts any issues I've had past and present”
1 September 2026 · via Trustpilot
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27 August 2026 · via Trustpilot
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Important information
- Limitations : For products shipped internationally, please note that any manufacturer warranty may not be valid; manufacturer service options may not be available; product manuals, instructions, and safety warnings may not be in destination country languages; the products (and accompanying materials) may not be designed in accordance with destination country standards, specifications, and labeling requirements; and the products may not conform to destination country voltage and other electrical standards (requiring use of an adapter or converter if appropriate). The recipient is responsible for assuring that the product can be lawfully imported to the destination country. When ordering from Ubuy or its affiliates, the recipient is the importer of record and must comply with all laws and regulations of the destination country.
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WST 78
Order now and get it around Wednesday, October 21
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Fastest cross-border delivery
Features & Benefits
- Seamless RS232 to Wi-Fi connectivity.
- Supports multiple wireless standards including 802.11b/g/n and Bluetooth 5.0.
- Easy configuration through web interface and IOT service tool.
- Supports a wide range of network protocols like TCP, UDP, MQTT, and more.
- Compact dimensions of 68.5 x 35 x 17.8mm – perfect for industrial and personal applications.
- Enhanced security features with TLS/AES/DES3 support.
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