The 433 MHz R120 door tag is a battery-powered RF transmitter that attaches to standard IT rack cabinet doors, or any door / frame that needs to be continuously monitored. Once installed on the door frame the R120 will monitor and report the door status, enabling you to track enclosure access attempts using your active RFID asset inventorying infrastructure.

The 433 MHz R120 tag is a battery-powered RF transmitter that broadcasts its unique ID and the door status message once every 10 seconds. Door status messages are received by an RF Code reader.

These affordable tags consist of an active RFID tag and a corresponding magnet assembly. Each piece features an industrial-strength adhesive backing for quick and easy installation. The R120’s form factor ensures clear signal transmission in high-density rack and data center deployments. Plus, RF Code’s patented communication protocols allow for very high tag densities.

R120 tag cases are impact resistant, splash resistant and temperature stable. The R120 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. In most deployment scenarios, tags with a 10-second beacon rate have a useful life of 5-to-7 years. 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
  • Designed for Use on Rack Cabinet Doors
  • Enables Rack Enclosure Access Monitoring
  • Industrial-Strength Adhesive Backing Allows for Easy Installation
  • Low Power Consumption for Long Battery Life
  • Superior Anti-Collision Technology for High Tag Densities