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JY-MCU Wireless Bluetooth Interface Board Serial Transceiver Module For Arduino
Description
Specifications:
1. The power anti-reverse, reverse power does not work
2. Input voltage 3.6 ~ 6V, prohibit more than 7V
3. You can install a variety of common models of Bluetooth module, such as the HC05, HC06, HC07, BC04 or other compatible Bluetooth module pin definitions
4. pinout include TXD, RXD, STATE (if any), KEY (if any) common pin, easy to use