The JDY-19 transparent transmission module is based on the Bluetooth 4.2 protocol standard, the working frequency band is 2.4GHZ, the modulation method is GFSK, the maximum transmission power is 4db, and the maximum transmission distance is 40 meters. The imported original chip design is used to support users to modify the device through AT commands Name, baud rate and other instructions, convenient and fast to use and flexible.
JDY-19 Bluetooth module can realize module and module data transmission. Through simple configuration, you can quickly use BLE Bluetooth for product applications.
Special note that JDY-19 master and slave are not integrated, the master and slave modules are separated, the hardware is JDY-19, the master and slave are using JDY-19 hardware, but the JDY-19 master or JDY is programmed in -19 slave program.