Bluetooth 4.0 AT-05 BLE Module HM-10 Compatible

AED 15.75



The Bluetooth 4.0 AT-05 BLE Module, compatible with the HM-10, is a wireless communication module that empowers your microcontroller unit (MCU) to configure, control, and exchange data seamlessly. This module serves as the ultimate choice for BLE (Bluetooth Low Energy) devices, offering exceptional functionality. With support for both Slave and Master modes, configurable through AT commands, it opens the door to flexible and efficient wireless communication. Whether you're connecting IoT devices, remote controls, or data transfer systems, the Bluetooth 4.0 AT-05 BLE Module is your reliable companion.



  • Dual Mode Support: This module operates in both Slave and Master modes, offering the flexibility to adapt to various communication scenarios.
  • Remote Control Mode: Devices connected to the module, such as iPhone4s/5, iPad, Note2, and more, can control PIO (Parallel Input/Output) pins and modify settings through AT commands when connected.
  • UART RS232 Serial Converter: Easily transfer UART data wirelessly via Bluetooth, eliminating the need for complex PCB layouts or in-depth knowledge of Bluetooth software stacks.



  • Bluetooth Protocol: 4.0
  • Operating Frequency: 2.4GHz ISM Band
  • Communication Interface: UART
  • Power Supply: 3.3V
  • Antenna: PCB Onboard Antenna (External DB Antenna Compatible)
  • Communication Distance: 30-40 meters (in open environments)
  • Bluetooth Certification: BQB, FCC, CE, ROHS, REAch
  • Bluetooth Name: BT05
  • Serial Port Parameters: 9800 Baud, 8-bit Data, 1 Stop Bit, No Parity, No Flow Control
  • Air Upgrade: Supports OTA (Over-the-Air) upgrades
  • Maximum Single Packet Bytes: 280 Bytes
  • Service UUID: FFE0
  • Notify UUID: FFE1
  • Write UUID: FFE2
  • Storage Temperature: MIN: -55°C, MAX: +125°C
  • Operating Temperature: MIN: -20°C, MAX: +70°C
  • Dimensions: 26.9mm x 13mm x 2.2mm
  • Flash: 256Kb


Pinout of the Bluetooth 4.0 AT-05 BLE Module:

Pin Description
UART_TX Serial Data Output
UART_RX Serial Data Input
VCC Power Supply (3.3V)
GND Ground
P1_3 Disconnect Pin (200ms Ground Pulse)
P1_2 LED and Other Pins (Not Connected: Flashing, Online: Long Bright)
P1_1 Bluetooth Connection Port
RESET Low-Level Reset (At Least 5ms)
SDA Data Port


Some AT Commands for the Module:

AT Command Description
AT Test Command
AT+BAUD Query/Set Baud Rate
AT+chK Query/Set Parity
AT+STOP Query/Set Stop Bit
AT+UART Query/Set UART Rate, Parity, Stop Bit
AT+PIO (Long) Query/Set PIO Pins Status (Long Command)
AT+PIO (Short) Query/Set a PIO Pin Status (Short Command)
AT+NAME Query/Set Device Friendly Name
AT+PIN Query/Set Device Password Code
AT+DEFAULT Reset Device Settings
AT+RESTART Restart Device
AT+ROLE Query/Set Device Mode (Master or Slave)
AT+CLEAR Clear Remote Device Address (if exists)
AT+CONLAST Try to Connect to the Last Successful Device
AT+VERSION Show Software Version Information
AT+HELP Show Help Information
AT+RADD Query Remote Device Address
AT+LADD Query Self-Address
AT+IMME Query/Set Immediate Boot
AT+WORK Start Device Operation (Use with AT+IMME for non-working devices)
AT+TCON Query/Set Try to Connect Remote Times
AT+TYPE Query/Set Device Work Type (Transceiver Mode or Remote Mode)