Pulse Readers | Sensors

Holosys Wireless M-Bus OMS Temperature Sensor WTS

Holosys Wireless M-Bus OMS Temperature Sensor WTS is a device that provides wireless temperature measurement via radio telegrams according to the Wireless M-Bus OMS standard.


The device is equipped with temperature sensor probe on a cable and provides accurate environment temperature measurement (±0.5°C accuracy in -10°C ... +85°C temperature range).


Besides temperature, it can optionally read two digital inputs (CH1 and CH2) states. The Wireless M-Bus OMS communication protocol ensures compatibility with a wide range of the equipment.

Key Features

  • Battery life: up to 15 years
  • Operating temperature: -20°C ... 80°C
  • Periodic Wireless M-Bus radio telegrams transmission which contains the last measured temperature value and additional information depending on the configuration
  • Radio telegrams adjustable sending interval
  • Radio telegram AES-128 encryption in order to protect data content
  • Configurable AES-128 password
  • Pseudorandom radio telegrams sending in order to avoid synchronous collisions
  • Battery powered radio repeater synchronization
  • Embedded Real-Time Clock (RTC)
  • Fault temperature probe alarm sending
  • Low battery alarm sending
  • Remaining battery life time sending 
  • Set intervals between temperature measurement
  • Device configuration using the AES-128-protected radio channel