It is a low consumption Bluetooth data transmission module based on the CC2541 and complies with the Bluetooth BLE V4.0 specification. Specification: Bluetooth V4.0 BLE, send and receive without byte limit Operating frequency, 2.4 GHz band ISM GFSK modulation (Gaussian frequency offset modulation) Sensitivity ≤-84dBm at 0.1% BER Asynchronous transfer rate : 6 kbps Synchronous: 6 kbps Power consumption Automatic standby mode, standby current 400uA ~ 1.5mA, transmission 8.5mA Master and slave function in one Operating voltage 3.2V - 5.5V (integrated LDO regulator of 3.3v) Compatible logic interface 3.3V / 5V (integrated level shift circuit) Type of logic interface Serial port UART TTL Baud rate of the serial port 9600 (default), modifiable in other values by the AT command Hands-free car applications Bluetooth, Bluetooth wireless data transmission, wireless keyboard and mouse, Arduino compatible smart home
