Grove Serial Blueseeed - BluetoothV2.0+EDR module with CSR BC417

Bluetooth module with built-in CC2541 chip. The module is small, energy-saving and easy to use

Crowtail – Bluetooth-compatible Low Energy Module is a small BLE + EDR communication module intended for wireless data transmission in IoT and automation projects. It enables fast serial-interface connection with mobile devices or computers.

The low-power consumption micro-controller intentionally designed for Internet of Things (IoT) projects. The board integrates a Dual-Core ESP-WROOM-32 module, which supports MCU and Wi-Fi &Bluetooth dual-mode communication. DFR0478

Bluetooth module v2.0 + EDR, controlled by AT + commands with built-in antenna.

A module that combines GSM/GPRS/GNSS and BT 3.0 technologies. It is available in a small, easy to solder LCC housing and has a low power consumption up to 1.2 mA. Quectel MC60CA

PmodBT2 - Bluetooth Interface

The Microchip RN4020 module is an energy-saving Bluetooth v4.1 module with a built-in antenna; transmit power level + 7dBm, AES128 coding

The ESP32 WiFi and Bluetooth module has a dual-core 32-bit MCU that integrates WiFi HT40 and Bluetooth / BLE 4.2 technology. Designed for mobile devices and Internet of Things (IoT) applications. DFRobot TEL0111

The Raspberry Pi RMC20452T is a Wi-Fi 4 and Bluetooth 5.2 module designed for use with Raspberry Pi microcontrollers like the RP2040. It offers low power consumption and simple integration thanks to its gSPI interface and full radio certification. Ideal for IoT projects, home automation, and wireless communication systems

Compact, low-power 2.4 GHz Bluetooth Beacon solution, ideal for sensor monitoring, asset tracking and real-time location. With extremely low power consumption, it can operate for years on a 3V button cell battery, making it an efficient choice for IoT applications. Module configuration is simple and intuitive thanks to the InPlay NanoBeacon Config Tool, which enables easy programming without the need to write code, offering a user-friendly graphical interface to set device parameters. Version with connectors and without LED and button, intended for direct use in the target application. SparkFun WRL-21327

Bluetooth audio receiver module enclosed in a housing that enables wireless transmission of sounds. It is equipped with a PCB antenna and a 3.5 mm audio jack

KAmodBT-HC05 is a Bluetooth module configured via AT commands. It has integrated LEDs indicating operating mode and connection status with the paired device, as well as a logic level translator on UART lines. KAmodBT-HC05

Evaluation Kit with Bluetooth 5.0 BT401. It is equipped with a microSD slot, microUSB connector and two audio outputs. DFRobot DFR0782

Low Energy Bluetooth adapter module with 2x4 pin 2.54mm connector, extra / high. RS232 allows communication with BLE devices

Compact, low-power 2.4 GHz Bluetooth Beacon solution, ideal for sensor monitoring, asset tracking, and real-time location. With extremely low power consumption, it can operate for years on a 3V button cell battery, making it an efficient choice for IoT applications. Configuration of the module is simple and intuitive thanks to the InPlay NanoBeacon Config Tool, which enables easy programming without the need to write code, providing a user-friendly graphical interface to set the device parameters. SparkFun WRL-21293

Board with Bluetooth HC-06 module, RoHS