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Keyestudio TS-30 Bluetooth Module for Arduino - Black + Yellow
This Bluetooth module can easily achieve serial wireless data transmission. Its operating frequency is among the most popular 2.4GHz ISM frequency band (i.e. Industrial£¬ scientific and medical). It adopts Bluetooth 2.1+EDR standard. In Bluetooth V2.1£¬ signal transmit time of different devices stands at a 0.5 seconds interval so that the workload of Bluetooth chip can be reduced substantially and more sleeping time can be saved for Bluetooth. This module is set with serial interface£¬ which is easy-to-use and simplifying overall design/development cycle.