AT-09 Bluetooth 4.0 UART Transceiver Module CC2541 Compatible with HM-10

This is the Blue variant of the AT-09 Bluetooth 4.0 UART Transceiver Module CC2541 Compatible with HM-10 in Bluetooth and NRF Modules. Available at ₹251.34 (₹213.00 + GST) with free shipping across India.

Looking for At-09 Module? AT-09 Bluetooth 4.0 UART Transceiver Module CC2541 Compatible with HM-10 is available at Zbotic with fast shipping across India.

Description

AT-09 Bluetooth 4.0 UART Transceiver Module CC2541 Compatible with HM-10

• The AT-09 is a module that contains a BLE chip (a CC2540/CC2541). This module allows performing serial communication with the BLE chip thanks to an Rx and a Tx pin. This module is also very similar to the HM-10 module and is also compatible with it. So if you have some experience with the latter, you will get started quickly with the AT-09.
• This small size Bluetooth 4.0 TTL transceiver module allows your target device to communicate with your iPhone/iPad, IOS 6 or Android 4.3 above devices. You can set it as a slave or master and use AT command to set the baud rate.
• HM-10 and HM-11 series Bluetooth module use TI CC2540 chip, configure 256KB space and support the AT command. Users can change the role (master, slave mode) and the serial port baud rate, equipment name, matching password and other parameters on-demand. It is very flexible to use.
• The most complete, most convenient, and most stable Bluetooth data transmission, remote control and data acquisition module. Master-slave in one, transparent transmission, replacing the serial port. Remote control, transparent transmission, MCU is unnecessary. Remote data acquisition, transparent transmission, MCU is unnecessary.

Pin Description of HM-10 BLE Bluetooth 4.0 CC2541 Wireless Module

• STATE: state test pins, connected to an internal LED, generally keep it unconnected.
• BRK: break connect, it means breaking the Bluetooth connection, generally keep it unconnected.
• VCC: positive pole of the power source.
• TXD: serial interface, transmitting terminal.
• RXD: serial interface, receiving terminal.

Features :

• It’s easy to use and completely encapsulated.
• You can set it as a slave or master.
• You can use the AT command set the baud rate.
• Coverage up to 60 meters.
• Built-in PCB antenna.
• UART design.
• Support bridge direct-driven mode simultaneously (no need for extra CPU).
• 20ms connection interval (default), quick to connect; Support AT instruction, to modify the baud rate of the serial port, gain MAC address and modify module name.
• Support AT instruction, to adjust the Bluetooth connection interval and control the forwarding rate (dynamic power consumption adjustment).
• Support APP; IO expansion.
• 2 channel ADC input (14 bit).
• 4 channel PWM (120Hz) output.
• The RSSI successive acquisition, auto read, and notification to APP (used in anti-lost alarm).
• Power indicator/alert.
• Support anti-hijack password setup, modification, and restoration.
• Ultra-low power consumption standby mode.

Applications:

• Industrial remote control, remote sensing.
• POS system, Bluetooth keyboard, mouse, game controllers.
• Automobile testing equipment.
• Portable, the battery power of medical equipment.
• Automated data collection.
• Bluetooth remote control toy.
• The wireless LED display system.
• Bluetooth printer.
• Intelligent household, industrial control.

Package Includes

• 1 x AT-09 Bluetooth 4.0 UART Transceiver Module CC2541 Compatible with HM-10

Useful Links

• Use HM-10 as a Central Device or an iBeacon
• Tutorials

Attachments:

Datasheet

AT-09 Bluetooth 4.0 UART Transceiver Module CC2541 Overview

The AT-09 Bluetooth 4.0 UART Transceiver Module CC2541 is a compact BLE communication board based on the Texas Instruments CC2541 chipset. Designed for seamless UART serial data exchange, it enables wireless connectivity between microcontrollers or PCs and Bluetooth 4.0-enabled devices like smartphones and tablets.

Key Features of AT-09 Bluetooth 4.0 UART Transceiver Module CC2541

• BLE 4.0 compatibility with CC2540/CC2541 chipset for low-energy wireless links
• Ultra-low standby current: 90 µA to 400 µA for extended battery operation
• Built-in PCB antenna supporting up to 60 meters line-of-sight range
• UART interface with Rx and Tx pins for TTL serial communication
• Wide supply voltage: 3.6 V to 6 V DC (maximum 6 V)
• Fully compatible with HM-10 firmware and AT command set
• Fast shipping from Zbotic across India

Applications and Use Cases

• Wireless data link for Arduino, ESP32, Raspberry Pi and other microcontrollers
• Home automation: connect sensors and relays to smartphone apps
• Bluetooth-controlled robotics and RC vehicles
• Wearable prototypes requiring low-power BLE connectivity
• Remote environmental monitoring with BLE sensor nodes
• Industrial machine status reporting via smartphone or tablet

How to Use AT-09 Bluetooth 4.0 UART Transceiver Module CC2541

Power the module with a regulated 3.6 V–6 V supply, connect the Tx pin to your host’s Rx and Rx to host Tx, then configure the module as master or slave using AT commands over serial (default baud rate). Pair with an iOS 6+/Android 4.3+ device, transmit or receive data via the UART interface, and integrate into your application firmware.

Why Buy from Zbotic?

• Genuine Products: All items sourced from authorized distributors
• Fast Shipping: Orders ship within 24 hours with tracking (non backordered products)
• Free Shipping: Free delivery on qualifying orders
• COD Available: Cash on Delivery, UPI, cards, net banking
• Technical Support: Expert help for setup and troubleshooting
• Easy Returns: Hassle-free replacement for defective products

Frequently Asked Questions

What is the operating voltage range of the AT-09 module?

The AT-09 module accepts a DC supply from 3.6 V up to a maximum of 6 V, making it compatible with typical 3.7 V Li-ion packs or regulated 5 V sources.

How do I send AT commands to configure the module?

Connect the module’s Rx/Tx pins to a USB-TTL adapter or microcontroller serial port set to the default baud rate. Send AT commands terminated with carriage return/line feed to enter configuration mode and adjust parameters.

Can I use this module with both Android and iOS devices?

Yes. The AT-09 implements Bluetooth 4.0 LE and works with iOS 6 or later devices as well as Android 4.3 or higher, allowing seamless BLE connections for data exchange.

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