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Gateway V4 + M-Bus over RS-485

Wireless M-Bus Gateway V4 with the wired M-Bus add-on over an RS-485 interface.

Variant of Gateway V4 + M-Bus

This is a variant of the Gateway V4 + M-Bus. It connects to wired M-Bus through an external RS-485 level converter (e.g. Relay PW100) instead of a native M-Bus master interface. Hardware type and firmware are the same (LOB-GW4-MBUS); only the M-Bus connection differs.

Wireless M-Bus Gateway V4 (Battery)

Description​

Gateway for remote reading of wireless and wired MBus values via NB-IoT, LTE-M mobile radio or LoRaWAN to the Internet. Suitable for indoor and weather-protected outdoor installation. This product variant uses an external M-Bus level converter (e.g. Relay PW100) connected via RS-485. The gateway itself does not provide a native M-Bus master interface. Instead, communication with wired M-Bus meters is performed via:

  • Gateway (RS-485) → External Level Converter (e.g. PW100) → M-Bus line
  • From a configuration perspective, the setup is identical to the standard GW4-MBus firmware variant, see Gateway V4 + M-Bus.

Features​

  • wM-Bus meter data upload via NB-IoT or LTE-M mobile radio (2FF / Mini SIM card)
  • Secure DTLS data transmission (client + server certificates) via mobile radio
  • Connection via CoAP and DTLS (NB-IoT, LTE-M) or MQTT (LTE-M) to the Lobaro platform
  • Direct connection via MQTT (LTE-M) to third-party systems possible.
  • Alternative upload via LoRaWAN 1.0.2 (EU-868)
  • Compatible with wireless M-Bus S1, C1/T1 modes (868 MHz) meters
  • Compatible with Xylem Sensus RF Bubble Up (868 MHz)
  • Compatible with Müller Funk (ME protocol, Walk-By) for µon and µflow skyW-2 and skyE-2
  • RS-485 interface for connection to external M-Bus level converters
  • Compatible with Relay PW100 M-Bus master level converter
  • M-Bus load capacity defined by external converter (e.g. PW100)
  • Internal memory, for over 64,000 telegrams
  • Whitelist for up to 2,000 individual meters
  • Remote configuration
  • Signed firmware updates (FOTA) via mobile radio

Product Components​

Component Info

This product is manufactured by Lobaro using the components listed below. Detailed information about the firmware and other components can be found in their respective descriptions.
Please use the links provided to access comprehensive product details.

ComponentManual / DescriptionAdditional note
Firmware

app-nrf91-origin

See here for available firmware updates

Housing

LoCube

122 mm (l) × 82 mm (w) × 55 mm (h)

Power Supply

Battery

(Li-SOCl2) 3.6 V, 38 Ah
External power supply (12 V or 230 V)

Please contact
support@lobaro.de
for further information

Optional Accessories

External Antenna

(SMA) instead of
internal antenna that is installed in
the device per default

Please contact
support@lobaro.de
for further information

IP68 encapsulation with transparent,
elastic 2K silicone gel

LoCube Backplate Wall Mounting Kit
Pole Mounting Kit

External M-Bus Level Converter

Relay PW100 (example)

Required for wired M-Bus operation via RS-485.
M-Bus load capacity depends on the external converter.

Product Identification​

  • Name: Wireless M-Bus Gateway V4 MBus
  • Type: LOB-GW4-MBUS
  • MPN / Ordering code: 1200436

Datasheet & Quickstart​

info

Please contact our sales team.

LED Signal Patterns​

The device uses the standard V4 LED signal patterns. See LED Signal Patterns for the full reference.

Battery Lifetime Estimator​

info

Please contact our sales team.

Configuration​

The device is shipped with default configuration parameters. Local changes can be made via the config port using the USB Config Adapter and the Lobaro Config Tool.

For step-by-step instructions, see the Configuration Methods guides:

tip

Custom factory configuration is available on request — devices can be pre-configured at production for your specific deployment. Contact sales@lobaro.de when ordering.

Firmware Updates​

The latest firmware can be found here:

note

A remote firmware update over LoRaWAN is currently not possible.

Configuration Parameters​

This product runs the app-nrf91-origin firmware. To avoid duplication, the parameters are documented centrally with the firmware component and are not repeated here:

Cellular uplink uses CoAP (with the Lobaro IoT Platform) or MQTT for third-party integration. The protocol details are documented centrally with the firmware:

The CoAP implementation details are not publicly disclosed and are intended for use exclusively with the Lobaro IoT Platform. If MQTT is not an option, please contact Lobaro directly.

Wireless M-BUS Parser​

A production-ready parser (including split telegram reassembly where applicable, AES-128 decryption for encrypted wM-Bus telegrams, and OMS-compliant data interpretation) is implemented within the Lobaro Platform.

Customers using the Lobaro Platform can utilize this parser directly as part of the platform processing pipeline.

If you are operating a Lobaro Gateway without using the Lobaro Platform, we can provide restricted platform access upon request. This allows you to inspect the parser behavior and use it as a technical reference for your own backend implementation.

Please contact our support team if you require access or further integration details.

Declaration of Conformity​

PDF DownloadDownload CE declaration of conformity
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