EWM104-BT41SP Serial Port to Dual-Mode Bluetooth Module PCB 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 diatance]：100m
[Size]：10 x 14.5mm
[Product weight]：0.8 ± 0.1g
[Introduction]：The E104-BT41SP module is a dual-mode serial Bluetooth slave module based on Bluetooth 5.4. It supports SPP and BLE protocols, operates in the 2.4 GHz frequency band, and allows switching between BLE and standard Bluetooth. It offers a maximum transmission power of 8 dBm and supports AT command configuration, simplifying and accelerating its use. This module enables wireless data transmission between entry-level serial devices and microcontroller-controlled devices. It is a cost-effective, simple, 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 | ||