AT-09 Bluetooth 4.0 BLE Wireless Module (CC2541 HM-10 Compatible UART Serial Module)

The AT-09 Bluetooth 4.0 BLE Wireless Module is a compact Bluetooth Low Energy (BLE) communication module designed for wireless serial data exchange between microcontrollers and BLE-enabled devices. Based on the CC2541 Bluetooth SoC and compatible with HM-10 modules, it supports UART communication and AT command configuration for flexible setup and control. With low power consumption and an onboard PCB antenna, the module is ideal for IoT devices, wireless sensor networks, remote monitoring, home automation, and embedded applications using Arduino, ESP32, STM32, Raspberry Pi, PIC, and AVR platforms.

Key Features -

• Bluetooth 4.0 Low Energy (BLE) wireless communication

• CC2541 chipset compatible with HM-10 modules

• UART serial interface for simple microcontroller integration

• Supports AT command configuration

• Low power consumption for battery-operated devices

• Onboard PCB antenna for reliable wireless connectivity

• Configurable UART baud rate

• Compatible with Android, iOS, Windows, and BLE-enabled devices

• Compact PCB module for embedded applications

• Ideal for IoT, robotics, and wireless communication projects

Specifications -

• Product type - Bluetooth Low Energy Module

• Model - AT-09

• Main IC / Chipset - CC2541 (HM-10 Compatible)

• Bluetooth version - Bluetooth 4.0 BLE

• Operating voltage - 3.3V DC (Typical)

• Communication interface - UART Serial

• Frequency band - 2.4GHz ISM Band

• UART baud rate - Configurable via AT Commands

• Antenna - Onboard PCB Antenna

• Package / Mounting type - PCB Module

Applications -

• Internet of Things (IoT) devices

• Wireless sensor networks

• Smartphone-controlled embedded systems

• Home automation projects

• Industrial monitoring systems

• Wearable electronics

• Robotics and automation

• Arduino, ESP32, STM32, and Raspberry Pi BLE communication projects