The Jeti telemetry expander module allow you to increase the number of telemetry sensors in your aircraft. The E4 ex Expander allows you to add up to four additional sensors directly to any of the Duplex EX 2.4GHz receivers.

Through the Duplex 2.4GHz system and either a JetiBox Profi or Jeti Transmitter you can monitor your data and alarm conditions in real time.