TRP-11 RS-232 to LoRa / wM-Bus OMS
TRP™-232: LoRa radio module with RS-232 / IEC1107 interface
product_TRP-11 RS-232 to LoRa / wM-Bus OMS

The TRP-232 is a battery-operated radio module capable of remotely measuring an electrical or heat meter (e.g.) using the RS-232 or an optical head (IEC1107). It transmits this data using the LoRaWAN protocol.

  • Remote reading of electric meters
  • Remote reading of heat meters
  • Smart metering
  • Energy efficiency
  • Energy audit
  • Automatic invoicing
  • For cities, districts, villages,...


  • Protocol: LoRaWAN 1.0
  • Submission: LoRa 868 MHz
  • RJ12 connector for USB communication
  • RS232 / IEC1107 interface
  • Compatible with all meters readable with IEC1107 optical head
  • Dimension: 153x89mm, ABS housing
  • Power supply: 3.7v/19Ah removable battery

The TRP-232 is capable of transmitting digital information read from the meters. The serial number, index and other adjustable values of the meter are transmitted.

Thanks to the advantages of LoRa technology and TRP™, data transmission takes place over long distances.

The TRP™-232 runs on a battery with a battery life of up to 10 years, depending on configuration.

How does that work ?

The module is configured from an XML file. The module queries the meter in RS-232 or IEC1107 (via optical head, article number 711408).
The filters defined in the XML file keep only some fields of the counter response (e.g. serial number, register 1.8.0, 1.8.1, 1.8.2, 2.8.0, 2.8.1, 2.8.2).

This data is then formatted into a LoRa packet and sent over the network.

This data may be sent to a TRMC-18 (Radio Receiver with Internal Non-Volatile Memory and Data Teletransmitter in 2G/3G/4G - article number 742304) or to a TRMC-19 (Data Reader, Radio Receiver, Data Logger and Data Teletransmitter in 2G/3G/4G - article number 739532).

The frequency of measurement of the meter is defined according to your choice (1x/day, 1x/hour or 1x/15min,…) as well as the frequency of data transmission in LoRa (e.g. 1x/day, 1x/hour, 1x/15min,...).

For configuration, it is necessary to use a USB <=> RJ12 adapter cable, which can be ordered separately (article number 708645). It is also necessary to use the program Axiome Basic, which is freely available on the Tetraedre website.


TRP™-232 : easy to use

The TRP™-232 allows you to transmit your meter data easily and have a reliable reading. Easy to install and small, the TRP™-232 will quickly find a place with your meter.

Like all TRP™s, the TRP™-232:

- is available in an ABS housing
- has a removable 3.7v/19Ah battery
- can be configured with a USB <=> RJ12 adapter cable to be ordered separately (article number 708645)


The description of the LoRa message is described here.


Article number related to TRP™-232

Number Name Further informations
712281 TRP-232
708652 BAT-3.6-19-J Lithium battery - 3.6V and 19 Ah - not rechargeable - suitable for Tetraedre TRPs
711408 OPTIC-232 Optical head for IEC1107 communication
711390 TRMC-1 RS-232 4G
 753111 BAT-3.7-8-LI-ION Lithium-ion battery - 3.7V and 8Ah - rechargeable - suitable for Tetraedre TRMCs 



Additionnal ressources and information