ITEM NAME:FR4 BC04-B Master-Slave-Bluetooth-Seriell-Adaptermodul 26.7 MMX 13mm x PDK NAK.Material: FR4. Size of core module: 26.7 MMX 13mm x 2.2mm. Bc04-b is a master and slave integrated bluetooth serial port module, master and slave can switch instructions, rich and complete instructions.
