AT-09 Bluetooth 4.0 UART Transceiver Module CC2541
AT-09 Bluetooth 4.0 UART Transceiver Module CC2541 - Image 2
AT-09 Bluetooth 4.0 UART Transceiver Module CC2541 - Image 3
SKU: IOWC-0180
📋 GST Invoice Available

AT-09 Bluetooth 4.0 UART Transceiver Module CC2541

₹269.00 (Inclusive of all taxes)
Out of Stock

The AT-09 is a compact Bluetooth 4.0 (BLE) UART transceiver module based on the Texas Instruments CC2540/CC2541 chipset, designed for seamless serial communication with iOS and Android devices. It operates from 3.6V to 6V DC and is firmware-compatible with the popular HM-10 module.

Features

  • Based on the proven Texas Instruments CC2540/CC2541 Bluetooth Low Energy (BLE 4.0) SoC for reliable wireless connectivity.
  • Simple UART (Tx/Rx) serial interface for easy integration with microcontrollers like Arduino, ESP32, or STM32.
  • Ultra-low power operation with standby currents from 90µA to 400µA, ideal for battery-powered IoT sensors and devices.
  • Features a built-in PCB antenna for a compact footprint with a typical line-of-sight range of up to 60 meters.
  • Fully compatible with the HM-10 command set and AT commands for configuring baud rate, master/slave roles, and device names.

Out of stock

Description

The AT-09 Bluetooth 4.0 module provides a streamlined, low-power bridge for adding BLE connectivity to embedded systems. Its core is the CC2541 system-on-chip, which integrates a 2.4GHz RF transceiver, an 8051 MCU, and programmable flash memory. The module communicates via a simple serial TTL UART interface, making it accessible for developers using common platforms.

Power management is a key strength, with the module supporting deep sleep modes to achieve microamp-level standby currents, enabling long-term deployment on coin cell or small LiPo batteries. The integrated PCB antenna eliminates the need for an external connector, simplifying enclosure design while maintaining a practical wireless range for indoor and short-range outdoor applications.

Key Features

  • Bluetooth 4.0 Low Energy (BLE) compliant transceiver for communication with modern smartphones and tablets.
  • Hardware and AT command compatibility with the widely-used HM-10 module, easing firmware migration.
  • Configurable as a Master or Slave device via AT commands for flexible network topologies.
  • Wide operating voltage range (3.6V to 6V DC) supports direct connection to 3.3V and 5V logic systems.
  • Compact form factor (17mm x 43mm) with all components on a single PCB for space-constrained designs.
  • Supports standard UART baud rates from 9600 to 115200 for adaptable serial communication speeds.

Applications

  • Industrial wireless sensor networks for remote monitoring and data logging.
  • Bluetooth-enabled human interface devices (HID) like keyboards, mice, and game controllers.
  • Smart home automation systems for controlling lights, appliances, and security sensors.
  • Portable medical and fitness devices for data transmission to companion apps.
  • Asset tracking beacons and proximity detection systems in retail or logistics.
  • Wireless data bridges for POS systems, printers, and automated data collection terminals.

Technical Specifications

Wireless ProtocolBluetooth 4.0 Low Energy (BLE)
Bluetooth SoCTexas Instruments CC2540 / CC2541
Frequency Range2.4GHz ISM Band
RF Transmit PowerClass 2 (Typical, ~4dBm)
Operating RangeUp to 60m (Line-of-Sight)
Supply Voltage3.6V to 6V DC
Standby Current90µA to 400µA
Communication InterfaceUART (Tx, Rx, VCC, GND)
AntennaIntegrated PCB Antenna
Operating Temperature-20°C to +75°C
Dimensions (L x W)43mm x 17mm
Weight5g

Frequently Asked Questions

How do I configure the AT-09 module's baud rate and device name?

Connect the module's TX and RX pins to a USB-to-serial adapter. Open a serial terminal at 9600 baud (default), send 'AT' to check connectivity, then use AT commands like 'AT+BAUD4' for 115200 baud or 'AT+NAMEYourDevice' to set the broadcast name. Ensure you send commands without a trailing newline for proper parsing by the module's firmware.

Can the AT-09 module connect to an Arduino or ESP32 as a Master device?

Yes, the AT-09 can be configured as a Master using the 'AT+ROLE1' command. Once set, it can actively scan for and connect to other BLE peripherals (Slaves). You would then wire its TX to the microcontroller's RX pin and its RX to the TX pin. Data sent from the Arduino serial port will be transmitted wirelessly to the connected Slave device, enabling bidirectional communication.

What is the power supply requirement and how do I minimize current consumption?

The module requires a regulated DC supply between 3.6V and 6V. For lowest power, ensure your firmware utilizes the CC2541's sleep modes via specific AT commands or custom programming of the chip. In typical UART pass-through applications, the module manages its own sleep states, but for absolute minimum consumption, you can physically disconnect power using a MOSFET controlled by your main MCU.

Package Includes

  • 1 x AT-09 Bluetooth 4.0 UART Transceiver Module

Additional Information

Weight 0.005 kg
Dimensions 4.3 × 1.7 cm

Related Products

Image
Out of Stock

BIGTREETECH BTT TMC2208 V3.0 UART Stepper Motor Driver

569.00
Learn More
Image
Out of Stock

Seeed Studio Studio XIAO Logger HAT w/ RTC & Sensors

1,049.00
Learn More
Image
Out of Stock

Arduino Modulino Latch Relay ABX00138

1,089.00
Learn More
Image
Out of Stock

DFRobot Fermion SD3031 Precision RTC Module Breakout

469.00
Learn More
Image
Out of Stock

WeAct CH584F Core Board WCH BLE 5.4 RISC-V

359.00
Learn More
Image
Out of Stock

AI-Thinker NF-05 2.4GHz GFSK Wireless Transceiver Module

91.00
Learn More
Image
Out of Stock

DYP E08TF-V1.1 Four-In-One Ultrasonic Sensor Converter Module - UART Interface

1,319.00
Learn More
Image
Out of Stock

DFRobot Beetle RP2350 Mini Dual-Core Dev Board

599.00
Learn More
Image
Out of Stock

HC-08 Bluetooth 4.0 BLE Serial Module w/ CC2540 Chip

619.00
Learn More
Image
Out of Stock

EByte E104-BT5032A nRF52832 BLE 5.0 Module w/ Ceramic Antenna

629.00
Learn More
Image
Out of Stock

EasyReach Solutions IoT-BLE-Beacon-V2.3 BLE 5.3 Beacon

767.00
Learn More
Image
Out of Stock

ST BlueNRG-MS Bluetooth 4.1 LE Daughter Board STEVAL-IDB005V1D

6,069.00
Learn More