Welcome to BT691’s documentation!

Contents:

• FSC-BT691 user guide
  • Introduction
  • Hardware Description
  • Function Description
  • AT command description
  • Commands Table
  • Event Table
  • Application scenarios
  • Appendix
• FSC-BT691 Upgrade manual
  • Introduction
  • Preparation work
  • Upgrading Steps
  • Read Firmware Version