Product Summary

The WB28 LoRaMesh Module from Lierda delivers low-power, long-range wireless connectivity for remote monitoring and control equipment. It covers the 868-930 MHz band, transmits at up to 22 dBm and reaches -124 dBm receiver sensitivity at SF7 with 125 kHz bandwidth. A UART interface connects the module to existing meter, controller or gateway electronics, while a 22 x 18 x 3.0 mm form factor and a -40 to +85 C operating range support rugged outdoor and industrial installations.

Key Features

• 868-930 MHz operating band - one module design can serve several regional market frequencies.
• Up to 22 dBm transmit power - a stronger link budget for long-range mesh networks.
• -124 dBm @ SF7, BW125 receiver sensitivity - dependable reception of weak signals from distant or dense node clusters.
• 1.8 V to 3.6 V operating voltage - flexible power design for battery- and DC-powered devices.
• UART communication interface - straightforward integration with existing boards and firmware.
• -40 to +85 C operating temperature - stable operation in outdoor metering enclosures and industrial cabinets.

Technical Specifications

Models and Options

The WB28 is the documented model in the current specification, and the available product image references the WB28-8M designation. Additional band sub-variants, interface options or SKUs are not listed in the supplied materials and should be confirmed with the supplier before design-in. Lierda also offers embedded software customization, ODM and OEM services that can be scoped to a specific project.

Materials and Structure

The WB28 is a compact LoRaMesh module measuring 22 x 18 x 3.0 mm. It integrates LoRa transceiver and mesh networking functions and communicates with a host through a UART interface, accepting a 1.8 V to 3.6 V supply across a -40 to +85 C temperature range. Detailed material composition and pin assignment are not part of the currently published specification and can be requested from Lierda.

Applications

The WB28 targets wireless monitoring and control where low power and long range are required. Documented application areas include smart photovoltaic systems, smart street lights and industrial control equipment. In smart metering, the module supports remote meter reading for e-meters, power meters, gas meters, water meters, gas detectors and remote gas meters, running in continuous 24/7 operation. Metering deployments referenced in the source material cover Germany, the United Kingdom, France and Vietnam, under a -40 to +85 C working condition and compatibility with various meter devices.

Customization

Lierda provides embedded software customization, ODM and OEM services for IoT modules. Buyers can discuss firmware adaptation, integration support and project-specific requirements directly with the supplier. Any customization scope should be agreed against the actual application conditions.

FAQ

1. What frequency band does the WB28 support?

The WB28 operates across 868-930 MHz.

2. What are the transmit power and receiver sensitivity?

Maximum transmit power is 22 dBm, and receiver sensitivity is -124 dBm at SF7 with 125 kHz bandwidth.

3. Which communication interface is available?

The module uses a UART interface for host communication.

4. What supply voltage and temperature range does it need?

Operating voltage is 1.8 V to 3.6 V, and the operating temperature range is -40 to +85 C.

5. What is the module size?

The WB28 measures 22 x 18 x 3.0 mm.

6. Which applications is the module used in?

Smart photovoltaic, smart street light and industrial control, plus smart metering with remote meter reading for e-meters, power, gas and water meters, and gas detectors.

7. Does it operate continuously?

The metering applications referenced in the source material use 24/7 operation.

8. How do I obtain pricing, MOQ or samples?

Contact the Lierda international sales team with your target quantities and destination; commercial terms are confirmed per project.

Image Filename and Alt Suggestions

wb28-loramesh-module-front-view.png | Alt: Lierda WB28 LoRaMesh module front view with compact 22x18mm footprint