ALLNET 4duino Serial Bluetooth 4.0 Module (ALL_OY_3375)

The ALLNET 4duino Serial Bluetooth 4.0 Module (ALL_OY_3375) is a compact and versatile Bluetooth Low Energy (BLE) module based on the Texas Instruments CC2540 chipset. Designed for seamless integration with Arduino, Raspberry Pi, ESP32, ESP8266, and other microcontrollers, it enables wireless serial communication over Bluetooth 4.0. With support for both master and slave modes, this module is ideal for IoT projects, sensor networks, and remote control applications.

Advantages

Low power consumption with operating current of ~8.5 mA and sleep current of ~50 µA, making it suitable for battery-powered devices. Easy configuration via AT commands allows customization of baud rate, device name, and pairing settings. The on-board PCB antenna provides a transmission range of up to 60 meters in open field, ensuring reliable connectivity.

Suitable for

• Wireless serial communication in Arduino and Raspberry Pi projects
• IoT sensor data transmission
• Remote control and automation systems
• Bluetooth gateway and bridge applications

Key specifications

• Bluetooth Standard: Bluetooth 4.0 Low Energy (BLE)
• Operating Modes: Master, Slave
• Communication Protocol: UART (Serial)
• Operating Voltage: 3.6V - 6V DC
• Logic Level: 3.3V
• Chipset: Texas Instruments CC2540
• Transmission Range: Up to 60 meters (open field)
• Default Baud Rate: 9600 bps (configurable)
• Frequency Band: 2.4 GHz ISM
• Current Consumption (Operating): ~8.5 mA
• Current Consumption (Sleep): ~50 µA
• AT Command Support: Yes
• Pin Count: 6 (VCC, GND, TXD, RXD, STATE, EN)
• Antenna Type: On-board PCB antenna
• Data Rate: 1 Mbps
• Operating Temperature: -20°C to +85°C

Recommendations

For optimal performance, ensure a stable power supply within the specified voltage range. Use a logic level converter if interfacing with 5V microcontrollers. Configure the module via AT commands before integrating into your project.