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The JDY-30/31 Bluetooth serial pass-through module offers a powerful upgrade over legacy HC-05/HC-06 modules, featuring Bluetooth V3.0 + EDR, a built-in PCB antenna, and a flexible voltage range (1.8V-6V). Designed for seamless UART interface integration, it supports a variety of applications including Bluetooth printers, POS machines, and smart home devices, delivering fast and stable wireless serial communication in the 2.4GHz ISM band.
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