900 MHz and 2.4 GHz Solutions

Unlicensed ISM Bands

All Digi radio modems operate within the unlicensed ISM (industrial, scientific and medical) radio frequency bands. 'Unlicensed' means that the user of these products does not need an individual license from telecommunication regulatory authorities. 'Unlicensed' does not mean 'unregulated'; the wireless product itself typically needs to meet strict regulations and be certified by the appropriate regulatory authorities. All Digi radio modems have undergone certification procedures and have qualified for certification to operate in many countries.

900 MHz vs. 2.4 GHz

Operating at 900 MHz yields significantly longer range (approximately 2 times) than what is possible at 2.4 GHz. However, 900 MHz solutions are permissible in fewer countries. [Refer to the Government Agency Certification table for more information regarding certifications gained by Digi.] For example, Digi 900 MHz solutions are certified for use in North America, but integrators in Europe must use Digi's 2.4 GHz solutions.

900 MHz Solutions (Longer Range)

XTend RF Modems
(RS-232/RS-485, USB)

XStream RF Modems
(RS-232/RS-485, USB, Telephone)

XPress Ethernet Bridge

2.4 GHz (Worldwide Use)

XStream RF Modems (RS-232/RS-485, USB, Telephone)

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