Bluetooth2 Click features BLUEGIGA WT41 Bluetooth® 2.1 module with operating range of 1000m (between two WT41 modules). It is equipped with iWRAP firmware which enables users to access Bluetooth® functionality with simple ASCII commands delivered to the module. It supports up to 14 Bluetooth profiles. Board is ideal for developers who want to integrate Bluetooth® wireless protocol with limited knowledge of Bluetooth® and RF technologies. It uses four UART interface lines and is designed to use 3.3V power supply only.