RTD Temperature (RTD/RTM)

Highly Reliable, Accurate Wireless Temperature Monitoring Solution.

  • Supports 2, 3, or 4-wire RTD sensors
  • 22-bit ADC with ±0.1 °C accuracy
  • RT1 includes 2” to 18” RTD sensor
  • Supports -55 °C to 260 °C range
  • Over 10-year battery life
  • Self-contained, rugged design
  • Class I, Division 1 (Zone 0), intrinsically safe
  • -40 ˚C to 70 ˚C / -40 ˚F to 158 ˚F
  • 900 MHz: Up to 7500 ft (2.3 km)
  • 2.4 GHz: Up to 4.3 miles (7 km)
  • Reports to a Gateway in OTC network
  • Secure AES encryption


The OleumTech® RTD and RTM Temperature Transmitters are ideal for monitoring air, gas, water, or liquid temperatures with high accuracy of ±0.1 °C. The RTD direct mount version includes a 4-wire Platinum 100 ohm sensor where users can select the length ranging from 2 to 18 inches. It supports temperature ranging from -65 °F to 500 °F (-55 °C to 260 °C). The RTM multi-vendor version provides a junction box and wiring terminal board for accepting a third party 2, 3, or 4-wire RTD sensors. The temperature output can be reported in Fahrenheit, Celsius, or both.


The RTD Transmitters Transmitters rely on power from a replaceable battery. The system is engineered to achieve maximum battery life, providing +10 years of life from a single battery.


Designed for use in Class I, Division 1 (Zone 0) hazardous locations. The Temperature Transmitters are intrinsically safe, meaning they cannot a cause a spark and can be serviced without being removed from a process.


These Transmitters are configured using BreeZ Software by OleumTech, provided free of charge.


The RTD and RTM communicate with an OleumTech Wireless Gateway within its network, creating a highly scalable network, accommodating virtually any I/O requirement.