AT-09 BLE 4.0 Bluetooth Serial Wireless Module (CC2540 / CC2541)

Upgrade your DIY electronics projects with the AT-09 Bluetooth Low Energy 4.0 Serial Module, powered by the reliable CC2540 / CC2541 chipset. Compatible with both Android and iOS devices, this compact SMD module delivers fast, stable wireless serial communication — perfect for Arduino projects, robotics, smart home prototypes, and more.

Key Features

Bluetooth Version: BLE 4.0 (Bluetooth Low Energy)
Chipset: CC2540 / CC2541
Ultra-Fast Response: Only 0.4 seconds connection time
Ultra-Low Standby Power: 90µA – 400µA for energy-efficient operation
Platform Compatibility: Works with Android and iOS devices
HM-10 Compatible: Drop-in compatible with HM-10 AT command set
Form Factor: SMD (Surface Mount Device)
Pin Options: Available in AT-09 6PIN and CC2541 configurations
Customizable: Supports custom AT command configuration

What's Included

1× AT-09 BLE 4.0 Bluetooth Serial Module (SMD)

Available Options

Choose from 2 configurations: AT-09 6PIN or CC2541 — select the version that best fits your circuit design.

Ideal For

Arduino and microcontroller wireless communication
IoT and smart home prototyping
Robotics and remote control projects
Wireless serial data transfer between devices
Makers, hobbyists, and electronics engineers

Frequently Asked Questions

Q: What is the AT-09 BLE 4.0 Bluetooth Module and what does it do?

A: The AT-09 is a compact Bluetooth Low Energy (BLE 4.0) serial wireless module built on the CC2540 or CC2541 chipset. It enables short-range wireless serial communication between microcontrollers (like Arduino) and Android or iOS smartphones, making it ideal for IoT, robotics, and DIY electronics projects.

Q: Is the AT-09 module compatible with HM-10?

A: Yes — the AT-09 module uses an AT command set that is compatible with the popular HM-10 module, so existing HM-10 code and libraries can typically be used with minimal modification.

Q: What is the difference between the AT-09 6PIN and CC2541 options?

A: The AT-09 6PIN version features a standard 6-pin interface suited for most breadboard and development board setups, while the CC2541 option refers to the raw chip variant. Choose based on your circuit design and pin layout requirements.

Q: How much power does the AT-09 Bluetooth module consume in standby mode?

A: The AT-09 module is designed for energy efficiency, consuming only 90µA to 400µA in standby mode — making it an excellent choice for battery-powered wireless projects where low power draw is essential.

Production & Packaging Notice

To maintain high stock availability and fast shipping times, our items are sourced from multiple verified manufacturing facilities. While the core quality, materials, and product specifications remain identical, you may notice slight variations in the packaging design, manufacturing origin, or the wording of the printed instructions.