Bluetooth Module BLE4.2 SPP3.0 2.4GHz Serial To Dual-Mode Low Power Consumption EBYTE E104-BT40 Support AT Command Wireless RF Module

E104-BT40 module is a serial to dual-mode Bluetooth slave module based on Bluetooth 4.2 + 3.0 version, namely low power consumption Bluetooth BLE and classic Bluetooth SPP Profile, which can freely switch between BLE and Classic Bluetooth, working at 2.4GHz. The E104-BT40 module uses general AT commands to set parameters, and the operation is simple and fast. The module only supports the Bluetooth slave role. Through this module, traditional low-end serial devices or MCU-controlled devices can performwirelessdatatransmission. It is a low cost, simple and reliable data transmission module. Features ：Bluetooth Specification V4.2 +3.0 protocol available；AT command configuration available; Support BLE；SPP 3.0； GPIO input / output; 2-way PWM outputs; 249 bytes of serial buffer; Effective communication distance over 30 meters; Global license-free ISM 2.4GHz frequency band; 1 ~ 2Mbps air rate; Built-in PCB on board antenna, no external antenna required. Application：Bluetooth wireless data tra