[Communication Interface]：UART

[Operating Frequency]： 2.4GHz

[Bluetooth Protocol]：BLE 5.4

[Communication distance]：200m

[Size]：10*10mm

[Product weight]：0.8±0.1g

[Introduction]：The E104-BT41SX module is a serial-to-dual-mode Bluetooth slave module based on Bluetooth 5.4. It supports both SPP and BLE protocols, operates in the 2.4 GHz frequency band, and can switch between BLE and classic Bluetooth. The module has a maximum transmit power of 8dBm and supports AT command configuration, making operation simple and fast. This module enables wireless data transmission between traditional low-end serial devices or MCU-controlled devices. It is a low-cost, easy-to-use, and reliable data transmission module.