Battery operated temperature sensor with radio transmission
Small, compact temperature sensor. The measured temperature value is transmitted per radio. 868 MHz frequency, Wireless M-Bus compatible (EN13757-4). Values can be received by the TRB-USB module or by the TRMC or TPT devices.
  • Temperature measurement in buildings
  • Industrial installation monitoring
  • Energy management
  • Monitoring of warehouse
  • Monitoring of production


  • Digital temperature sensor, factory calibrated
  • TRP-3-AI : Operates from -10°C to +60°C. +/-0.1°C accuracy in the range +5°C to +45°C and +/- 0.2°C outside this range
  • TRP-3-AIX : Operates from -30°C to +85°C. +/-0.5°C accuracy in the range -10°C to +85°C and maximum +/- 2°C outside below -10°C.
  • Compatible with EN 13757-4, mode T1 (Wireless M-Bus), 868 MHz
  • Internal battery operation, easily replaceable. High autonomy: Up to several years depending on the settings.
  • Programmable measurement interval. Typically 1 minute or 15 minutes
  • Data transmission every 8 seconds on average
  • Internal sensor
  • OMS Compatible

The TRP-3 is a wireless temperature sensor designed for indoor temperature measurement applications. The device is compact, reliable and efficient. Data are transmitted per radio at regular interval according to the Wireless M-Bus protocol

The TRP-3 data messages can be received by TRMC (radio versions), TPT (radio versions) and the TRB-USB devices

In optimal conditions, the maximal range is 800m. The indoor range is very dependant on obstacles and is often several tens of meters.

The TRP-3 module is powered by a lithium battery 3.6V 2.4Ah. The consumption of the module TRP is very low, generally less than 10 µA. The radio transmission consumes more energy but only during some milliseconds. With the lithium battery, the autonomy can reach 5, 10 even 15 years, according to the selected settings.

By default, the interval of measure of the TRP-3 is 15 minutes. The interval of measure can be modified by the serial interface with the appropriate software.

Dimensions : 125 x 67 x 30mm

Additionnal ressources and information