The 433 MHz M172-i IR Durable Tag is a battery-powered RF transmitter designed with a sealed, water-resistant, crush-proof enclosure for general-purpose asset tracking. Every tag broadcasts its unique ID and a status message at a periodic rate (that is programmed at the factory). These tags provide an economical solution for a variety of asset tracking environments. RF Code’s patented communication protocols support high tag densities that allow large populations of tags to be deployed in confined spaces.

M172-i IR Durable Tags are equipped with on-board infrared (IR) and motion sensors. This family of tags is designed to be deployed in concert with RF Code’s IR Room Locators. IR-enabled tags monitor their environment for incoming IR signals and periodically report both their own unique ID and IR location codes. Motion activation allows the tag operate at 2 beacon rates: slow when the tag is stationary, and faster when the motion sensor is activated. This provides a method for rapidly locating mobile assets Tagwith room-level accuracy. Since location is determined via the IR room code, there is no need for deploying multiple overlapping readers or performing complicated signal strength calculations or triangulation algorithms to determine tag location.

M172-i IR Durable Tags are impact-resistant, splash-resistant and temperature stable. Labels are sealed on the inside of the clear polycarbonate enclosure via sonic-welding at the point of manufacture. This protects both the label and the electronics from moisture and fluids. The durable enclosure provides excellent resistance to harsh environments; it can withstand salt water splashes, cleaning solutions, germicides, disinfectants, etc.

Powered by a coin cell battery, the M172-i tag will perform reliably in extreme temperature environments (from -20 to +70 degrees Celsius). In addition, the tag performs well after exposure to humidity and hot/ cold cycles. The tag operates with a very low duty cycle that translates to long battery life. Based on the ratings and specifications from the battery manufacturers, RF Code develops usage models to calculate the life of the active RFID Tags. Like all models, there are assumptions and approximations involved. The values are to be taken as engineering estimates – not guaranteed performance. Exposure to extreme temperatures will shorten the battery life. RF Code warrants all tags to be free from defects in materials and workmanship for a period of 1 year.


  • Encoded Radio Transmissions at 433 MHz
  • IR-enabled for Room-Level Location Accuracy
  • Water-resistant Sonic-Welded Enclosure Customizable Beacon Rates
  • Low Power Consumption for Long Battery Life
  • Superior Anti-Collision Technology for High Tag