AT-09 Bluetooth 4.0 Module BLE CC2540 Transceiver CC2541 - iOS Android Compatible
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AT-09 Bluetooth 4.0 BLE Module | TI CC2540 / CC2541 Transceiver with AT Command Set, iOS / Android Compatibility and 60m Range for Smartphone-to-MCU Wireless Communication
The AT-09 Bluetooth 4.0 BLE Module is the compact wireless transceiver for connecting embedded MCU designs to iOS 6+ and Android 4.3+ smartphones / tablets. Built around the proven TI CC2540 / CC2541 BLE chipset, the AT-09 supports both slave and master modes via AT command set — ready for production use without custom firmware development.
Operates from 3.6V to 6V DC supply (don't exceed 6V) with ultra-low standby power 90 µA - 400 µA for battery-friendly designs. Coverage range up to 60 meters in open conditions — sufficient for most IoT, wearable, and smart device applications. Built-in PCB antenna eliminates external antenna design complexity. Compact 43 × 15 mm form factor fits standard breadboards and production PCBs. Baudrate configurable via standard AT commands for integration with any UART-equipped MCU.
Typical Applications
- Smartphone-controlled IoT devices — fitness trackers, smart appliances, wearables.
- Smart home devices — Bluetooth-enabled lighting, switches, thermostats.
- Embedded MCU-to-phone communication — Arduino / STM32 / ESP32 projects needing smartphone bridge.
- Industrial sensors — short-range data uplink to handheld diagnostic apps.
- Educational electronics projects — teaching BLE protocol, GATT services, smartphone integration.
- Medical / fitness devices — heart rate monitors, fitness sensors connected via BLE.
AT-09 BLE Module Specifications
| Feature | Specification |
|---|---|
| Chipset | TI CC2540 / CC2541 |
| Bluetooth Standard | Bluetooth 4.0 BLE |
| Mobile Compatibility | iOS 6.0+ / Android 4.3+ |
| Modes | Slave or Master (configurable via AT commands) |
| Standby Power Consumption | 90 µA – 400 µA (ultra-low) |
| Coverage Range | Up to 60 meters (open environment) |
| Antenna | Built-in PCB antenna |
| Power Input | 3.6V – 6V DC (do not exceed 6V) |
| Size | 43 × 15 mm |
| Color | Blue PCB |
| Communication | UART with AT command set |
| Condition | Brand New |
FAQ — AT-09 BLE Module
Q: AT-09 vs HM-10 — what's the difference?
A: Both are CC2540 / CC2541-based BLE modules with similar AT command sets. AT-09 (Chinese clone of HM-10) is significantly cheaper but uses a different default GATT service UUID. For iOS / Android app development, verify the UUIDs your app expects match the module — minor firmware reconfiguration may be needed.
Q: How do I configure baud rate / device name / etc.?
A: Connect the module's UART to a USB-to-UART adapter, open a serial terminal at default 9600 baud, send AT commands like `AT+BAUD8` (115200), `AT+NAMEMyDevice`, etc. The AT command list is documented in the CC2540 / CC2541 datasheet and HM-10 docs.
Q: Can it handle Bluetooth Classic (BR/EDR) for audio?
A: No — the CC2540 / CC2541 chipset supports BLE (Low Energy) only. For audio streaming (A2DP profile), use a Bluetooth Classic module like the HC-05 or dedicated audio module.
Q: Bulk pricing for production runs?
A: Yes — email contact@lys-sz.com with your quantity for tier pricing.
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System integrators stocking AT-09 BLE modules by the reel? Email contact@lys-sz.com for bulk pricing. Worldwide shipping from our Shenzhen warehouse.
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