EWM104-BT41SX Serial Port to Dual-Mode Bluetooth Module IPEX 3 Antenna BLE 5.4 SPP dual modes UART Master-slave integrated transparent transmission
[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.
Official Store| Main parameters | performance | Remark | |||
| Minimum | Typical values | Maximum | |||
| Operating voltage (V) | 2 | 3.3 | 3.6 | ≥3.3V can guarantee output power | |
| Communication level (V) | - | 3.3 | - | Using 5V TTL will burn the module | |
| Operating temperature ( °C ) | -40 | - | 85 | ||
| Operating frequency band (MHz) | 2400 | - | 2480 | ||
| Power consumption | Dual-mode waiting for connection (mA) | - | 2.9 | 29.5 | |
| SPP closed BLE waiting to connect (mA) | - | 2 | 29.5 | ||
| BLE connections (mA) | 2.3 | 27.4 | |||
| BLE connection sending data (mA) | 2.3 | 29 | |||
| SPP connection (mA) | 2.8 | 26.6 | |||
| SPP connection sending data (mA) | - | 2.9 | 27.6 | ||
| Sleep power consumption (uA) | - | 1.5 | - | Turn off all broadcasts | |
| Transmit power (dBm) | 0 | 6.4 | 8 | ||
| Receive sensitivity (dBm) | - | -93 | - | ||
| Main parameters | describe | Remark | |
| Reference distance | Connection distance | 100m | Transmitting power 8dBm, in a clear and open environment, antenna height 1 meter |
| Communication distance | 200m | ||
| Launch length | 255Bytes | SPP/BLE payload 255 bytes | |
| Bluetooth protocol | V5.4 | - | |
| Communication interface | UART serial port | - | |
| Packaging | SMD | - | |
| Interface | 1.27mm | stamp holes | |
| Dimensions | EWM104-BT41SX | 10*10mm | IPEX-3 antenna interface |
| EWM104-BT41SP | 10*14.5mm | PCB antenna | |
| Antenna interface | EWM104-BT41SX | IPEX 3rd Generation Antenna | Equivalent impedance is about 50Ω |
| EWM104-BT41SP | PCB onboard antenna | ||