Number of sensors: High concentration of sensors up to 30 meters, Few sensors, Many sensors spread over an extended area
Parameters to be monitored: Temperature or temperature and humidity only, Temperature, humidity and other parameters
Area covered by the Lorawan Network: Yes
Real-time data management: Real-time data monitoring and alert receiving, Consultation of data and exceeding thresholds when goods are received without any action
Type of transport: Global, National
Sensor location: Locate the area where the sensor is

 Wireless temperature data logger LoRa TEMP+ T4 for hot water system

Temperature Sensor specially designed for monitoring hot water systems

The connected temperature logger LoRa TEMP+ T4 measures and records the temperature inside the pipes via an external temperature sensor.
It is attached to the pipes with cable ties without damage them.

It connects to the LoRaWANTM network of telecom operators members of the LoRa AllianceTM or to the private network of a Micro Gateway data transmission module.

In case of thresholds excursions, real-time alerts are sent by SMS text message, mail or voice message.

Data can be viewed and managed via the easy-to-use and intuitive web based JRI-MySirius interface.



  • Measure, record, and send out alert notifications spontaneously
  • Mounting hole & mounting bracket for easy installation
  • Dedicated to hot water systems
  • User-replaceable long lasting battery
  • 868MHz / 915MHz




  • Temperature range : -40°C to +85°C
  • Measurement accuracy : 
    • ±0.3°C on a copper pipe
    • ±0.5°C on a CPVC pipe
  • Communication frequency : 868/915 MHz
  • Memory : 10 000 data points
  • Radio range : Up to 16 km open field range
  • Interface : 1 LED, 1 push button
  • Sensor : External PT100
  • Dimensions : 65 x 65 x 28 mm
  • Weight : 100 g
  • Power supply : A size replaceable lithium battery
  • Battery lifetime : 5 years (logging interval: 15min, transmission interval: 60min)
  • Part nrs : 
    • 13226 : LoRa®Temp’+ T4 868 MHz, PT100, 2m cable, -40+85°C (without battery)
    • 13226 A : LoRa®Temp’+ T4 868 MHz , PT100, 2m cable, -40+85°C (with battery)
    • 13227 : LoRa®Temp’+ T4 915 MHz, PT100, 2m cable, -40+85°C (without battery)




file dowload Download the user manual
file dowload Download the datasheet