Wireless M-BUS concentrator
The RFM-C4 is a gateway that collects data sent by wireless MBus devices and retransmits them via CAT1/4G signal and MQTT protocol. Consumption data and information sent by B METERS devices equipped with a Wireless M-Bus interface are collected by the RFM-C4 concentrator and sent to a BMeters portal.
Through the portal it is possible to set the SMTP and/or FTP email sending of data received from the concentrator. The email contains the file of the telegrams collected in .txt and/or .csv* format and is forwarded to up to five different addresses with hourly*/daily/weekly/monthly frequency.
The device is configured using a PC connected via USB-C cable to the RFM-C4 concentrator.
| Radio interface | WMBUS EN13757-4 868 MHz , T+C mode (input) |
| Modem interface | CAT1 / 4G |
| Data transmission | MQTT 3.1 |
Up to 2000 telegrams | 1/2 λ Rubber antenna (wM-Bus) |
| Internal memory WMBUS telegrams | Up to 2000 telegrams |
| WMBUS signal range | Up to 300 m** |
| Power supply | 100-305 VAC 50-60 Hz or 2xER-34615*** |
| Maximum consumption | CAT1/4G Typical 120 – 150 mA in transmission Max 600mA |
| Size (H x L x P) | 150 x 150 x 53 mm (without antennas) |
| Temperature range | -30°C / +50°C |
| Protection class | IP40 |
| Report format | .txt, .csv, .xml* |
| Report planning | Hourly* / Daily / Weekly / Monthly |
| Report download | SMTP Mail (FTP client, Webserver future support) |
* To enable the CSV sending and hourly sending functions on the portal, it is necessary to use your own SMTP server.
** under optimal conditions
*** Lithium < 5g/cell, UN3091 class 9 (maximum battery life 7 years)
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