3pcs JDY-31 SPP-C Pass-through Wireless Bluetooth BLE Module Serial Communication Compatible with CC

Applications: ? 1: Bluetooth printer 2: Bluetooth POS machine 3: intelligent home control 4: Bluetooth wireless data transmission ? Features: ? Bluetooth V3.0 + EDR Bluetooth Class 2 Built-in PCB radio frequency antenna Support UART interface 3.3V power supply Operating Frequency Band:2.4GHz -2.48GHz unlicensed ISM band? Bluetooth Specification: V2.1+EDR? Host Interface: UART? Support Bluetooth SPP protocol, the transmission speed of up to dozens of K per second ? Package Included: ? 3 x JDY-31 SPP-C Pass-through Wireless bluetooth BLE Module