All Sena Bluetooth 4.1 and 5.0 headsets have two modes for communicating between each other using Bluetooth, Normal Intercom Mode and HD Intercom Mode.
Normal Intercom Mode allows for intercom communication between multiple headsets (up to 4 that support 4-Way Intercom and up to 8 that support 8-Way Intercom). In addition, Normal Intercom can be used to talk over long distances with 1 other person up to 1.2 miles (2.0 km) away (or specified range on Sena's website) in open terrain and with line of sight.
HD Intercom Mode allows for higher quality intercom communication by combining the Advanced Audio Distribution Profile (A2DP) with the Intercom Profile. By combining these two Bluetooth profiles together for higher quality communication, the amount of headsets that can communicate in HD Intercom Mode is 2 and range between each of the headsets is reduced compared to the range of Normal Intercom Mode.
Note:
- Bluetooth 3.0 headsets only support Normal Intercom Mode.
- All Bluetooth 4.1 headsets support both Normal Intercom Mode and HD Intercom Mode (except for the R1 EVO, M1 EVO and Tufftalk M which do not support the Bluetooth Intercom feature).
- HD Intercom Mode is enabled by default on all Bluetooth 4.1 headsets that support this feature and can be disabled through the Sena Device Manager or a headset's compatible smartphone app such as the 50 Series App, the Sena Utility App, etc.
- The headsets will automatically switch to Normal Intercom Mode when a third person is added to the Bluetooth intercom group to a create a Three-Way Intercom conference.
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