1、This board is fully compatible with V0 pins and usage methods. 2、4GHZ range working frequency, modulation method is GFSK, maximum transmission distance is 50 meters/160ft. 3、Integrates BLE module and V0 board, which is very convenient for bluetooth wireless connection applications. 4、Adopts imported original TI chip design, supports users to modify the device name, service UUID, transmission power, pairing password and other instructions through AT commands, which is convenient and flexible to use. 5、Support virtual USB serial port, hardware serial port, BLE three‑way transparent transmission, ultra small size, more convenient to use. 1 x Motherboard Conditon: 100% Brand NewItem Type: MotherboardMaterial: Synthesis BoardColor: As Pictures ShownFully compatible with V 3.0 pins and usage methodsBLE Chip: TI CC2540Working Channel: 2.4GTransmission Distance: Approx. 50m/ 164.0ft in Open AreaSupport Bluetooth Remote Update ProgramSupport IBeaconsSupport AT Command to Configure BLESupport USB Virtual Serial Port, Hardware Serial Port, BLE Three-Way Transparent TransmissionSupport Master-Slave SwitchInterface: Mircor-UsbInput Voltage: Mircor-Usb Power Supply, Vin6-12V, 5VMicroprocessor: ATmega328P-MU QFN32Pins: Two Rows of 2.54mm-15Pin