Dual-mode Bluetooth to TTL serial

SKU: 12190
Part Number: Dual-mode Bluetooth
Brand: Waveshare




Dual-mode Bluetooth to TTL serial, master/slave-in-one


Dual-mode Bluetooth is a wireless module that allows bi-directional transparent data transfer between the TTL serial and Bluetooth devices. It is designed to be master/slave-in-one, also, it supports iBeacon. You can easily operate the module via AT commands, like: set baudrate, change broadcast name, and IO control, etc.


  • Dual-mode Bluetooth, completely compatible with iOS and/or Android devices
  • Works as a full-duplex serial pipe after pairing, requires no Bluetooth protocol knowledge
  • Fully configurable via AT commands
  • XBee interface
  • Comes with iOS and Android demo code, like: mobile robot remote control, data acquisition, device status monitoring, etc.


  • Bluetoothversion: Bluetooth Specification V4.0 EDR and BLE
  • Frequency range: 2.4GHz ISM
  • Modulation: GFSK (Gaussian Frequency Shift Keying)
  • Communication distance: SPP 50m, BLE 100m (ideal condition)
  • Sensitivity: ≤-84dBm (0.1% BER)
  • Antenna: onboard antenna
  • Transfer speed: about 40% serial speed for SPP, about 30% serial speed for BLE
  • Packet length: 60 bytes for SPP, 20 bytes for BLE
  • Serial buffer: 512 bytes
  • EDR service: L2CAP, SDP, RFCOMM, SPP
  • BLE service: ATT, GATT, LE Service: 0xFFE0, Char: 0xFFE1
  • Power consumption
    • SPP: avg 13mA
    • BLE: avg 9.5mA
    • Standard: 10-17mA
  • Power supply: 3.3V 50mA
  • Operating temperature: –5°C ~ 80°C


  • Wearable devices
  • Bluetooth intelligent application
  • Smart home appliances
  • Industry control
  • Data acquisition system


Note: photos are FOR REFERENCE ONLY, the other boards/modules/accessories are NOT included in the price.


UART TO ETH dimensions

Development Resources

Wiki : www.waveshare.com/wiki/Dual-mode Bluetooth

Weight: 0.006 kg

Quick Overview

  1. Dual-mode Bluetooth x 1