The unit uses the Nordic chip nRF52832 and firmware supports the “peripheral only” operating mode, allowing easy expansion of existing hardware with the BLE interface. In its default state, this mode provides static key pairing and a transparent UART interface.
Thanks to the “peripheral only” operating mode, the AMB2621 Bluetooth Smart module is especially energy-saving, as the UART (Universal Asynchronous Receiver Transmitter) interface is only active once a wireless connection is established. Uncomplicated static passkey pairing is used as a security device as in the hands-free system in the car. All BLE profiles can be used with the AMB2621, i.e. besides the “peripheral” profile mentioned, also “central”, “observer” and “broadcaster” profiles. The latter means sending beacons.
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