AMBER wireless offers an extremely compact and energy-saving wireless module - the AMB2621 Bluetooth Smart module. Besides standard control with UART commands, smartphones or other devices can be connected to form a module by initializing with the “peripheral only” operating mode. The 2.4 GHz BLE wireless module based on the Bluetooth Smart 4.2 standard, has a size of just 11 x 8 x 1.8 mm, offered with or without integrated antenna.
The 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. Customers can install and use the module with ease, without having to previously configure it and without big changes to the interface in their application.
Thanks to the “peripheral only” operating mode, the Bluetooth 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. The module is suitable for all manufacturers wishing to connect their electronic control with a mobile device. It does not make a difference whether this control has been on the market for years or is just in the development phase. AMB2621 with peripheral mode is recommended whenever the module itself does not initiate any connections (i.e. is only contacted from the outside) or no user interface can be implemented, as the rest of the product is already ready.