A band dedicated for Digital Enhanced Cordless Telephone operation, also known as the DECT band.
Reserved for compatible DECT radio communication, the 1.9 GHz band is less likely to experience interference from other wireless products making it a dependable solution. 1.9 GHz is subject to multi-path in some environments and not all channels are available in all regions.
A license-free ISM band available
for use in most regions.
Being part of the 802.11 standard, the license-free 2.4 GHz band is reserved for industrial, scientific, and medical (ISM) purposes. Most notably for Wi-Fi. With 14 total channels (not all are available in certain regions), wireless communications can be deployed without overlap or interference.
A license-free ISM upper band available
for use in most regions.
This ISM band allows the most user configuration, but this also means that it is the most complex to deploy. 5 GHz is ideal in highly reflective environments (c.f. DECT) and situations where the user has full control of the 5 GHz band.