GSM/4G communication transfers meter readings from sites without a wired internet connection to a central platform. Selection depends on the meter interface, local mobile coverage and the receiving software. An external modem installation and a data collector with an integrated cellular modem are different system options.
Integrated 4G option: ATLAS M-BUS CONVERTER-4G
The ATLAS M-BUS CONVERTER-4G datasheet describes a collector that sends M-Bus meter data to the cloud using MQTT through an integrated LTE Cat.4 modem. This model does not require a local computer or an external GSM modem. The specifications below apply to this named model, rather than to every GSM communication module.
Verified specifications of the 4G model
| M-Bus capacity | Up to 250 meters; check actual capacity against bus loading and project design |
|---|---|
| Cellular connection | LTE Cat.4; 2G fallback depends on the operator and regional network |
| Data transmission | MQTT with configurable broker, topic, QoS and TLS settings |
| SIM and antenna | Single Nano-SIM (4FF), external SMA antenna |
| Power supply | 48 V DC / 1 A |
| Commissioning | USB 2.0 / RS232; M-Bus 300–19200 baud |
| Operating environment | −20°C to +70°C; indoor use with an enclosure suitable for the site |
| Enclosure and mounting | 157 × 91 × 58 mm; DIN rail |
Selection and commissioning for your project
- Identify meter makes/models, M-Bus interfaces and total device count.
- Assess bus topology, cable length/cross-section and M-Bus loading together.
- Check the destination country, operator and on-site coverage; frequency bands and certifications depend on the modem variant.
- Prepare the SIM data plan, APN and PIN if required.
- Match the MQTT server address/port, authentication, TLS and reporting interval to the project.
Frequently asked questions
How does this differ from a standard M-Bus converter?
A standard converter may rely on a local computer or external communication device. The 4G model described here integrates the cellular modem and direct MQTT cloud transmission.
Can any meter connect directly?
No. A suitable M-Bus interface is required, and addressing, data format and total bus loading must be verified. Pulse, Modbus and LoRaWAN outputs are different interfaces.
Are 250 meters guaranteed for every installation?
This is the upper capacity stated in the datasheet. Actual network capacity requires an engineering check of bus loads, cabling and the polling plan.
Select a solution for your installation
Include meter makes/models, quantity, destination country, communication interface and target platform in your enquiry. These details help assess compatibility with the existing meters and cabinet.
Request technical selection and a quote
Related solutions
Technical source: ATLAS M-BUS CONVERTER-4G datasheet. Confirm the regional modem variant and project compatibility before ordering.
