• A green LED is used to indicate TX/RX activity of RS232 serial communication.
• This User Guides (Electronic edition)
• Supports Pin 9 power supply, just connect pin9 to 5V and pin5 to GND.
• Can be connected to female or male serial device by DB9 connector or converter.
• AT commands can be sent via Bluetooth link to personalize name, baud rate, etc.
1.2 Package Contents
• USB to Type-C power/charging cable x1
• Built-in battery and charging circuit, more than 40 hours battery usage time.
• DB9 male to female converter(Gender Changer) x1
• BT578_V3 Serial Bluetooth adapter x1
Thank you for purchasing BT578_V3 Serial Bluetooth adapter! The adapter is usually
connected to a RS232 serial communication device by the DB9 serial port, and then
connected to a computer or mobile phone via Bluetooth SPP or BLE, thus build a wireless
bridge between the serial device and the computer or mobile phone. It can eliminate your
conventional RS232 serial cable, connects communication both sides over the air, provides
a wireless serial connection with more freedom and convenience.
1. Introduction
1.1 Features
• Supports Classic Serial Port Profile(SPP) and new generation Bluetooth LE(BLE).
• Use the popular USB Type-C connector for power supply or charging.
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