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The Bluetooth Serial Port Module OBS421 is a Bluetooth v4.0 module
with UART interface for transparent serial data transmissions. Since
the module is a dual-mode module the serial data can be sent both using
Classic Bluetooth technology via SPP and using Bluetooth low energy
technology via the connectBlue Low Energy Serial Port Service. With the Bluetooth stack embedded, you can be up and running quickly as there is no need for a driver or stack in your host. The module is fully Bluetooth qualified and radio type approved for Europe, Japan, US and
Canada. It also has the connectBlue standard interface for compatibility over time and radio Technologies.

 

OEM_bluetooth_OBS421.pdf