DX BT164.2 Bluetooth Module User Manual

This manual covers the overview, features, application circuits, layout notes, and AT command set for the DX BT164.2 Bluetooth 4.2 BLE module.

Brand: DX
Category: Other Electronics
Document type: User Manual
Language: Chinese
Pages: 11
File format: PDF
File size: 1.4 MB
Published: 16 October, 2026
Updated: 16 October, 2026
MD5 checksum: B84242E422BE53E84D6C12C765316F2A
PDF: DX BT164.2 Bluetooth Module User Manual PDF

About this manual

The document introduces the DX-BT164.2 Bluetooth transparent transmission module, which utilizes the Airoha AB1602 single-chip solution to achieve data transmission based on GATT. It supports serial command mode for interaction with external MCUs, allowing users to configure parameters such as UUIDs and Bluetooth names via serial commands. This manual is written in Chinese.

What's inside

Overview
Features
Application Fields
Application Circuit Diagram
Layout Precautions
AT Command Set

Specifications

Bluetooth Protocol	Bluetooth Specification V4.2BLE
Operating Frequency	2.4GHz ISM band
Modulation Method	GFSK(Gaussian Frequency Shift Keying)
Sensitivity	≤-84dBm at 0.1% BER
Supply Voltage	+3.3VDC 50mA
Dimensions	18mm x 14.5mm x 2mm
Transmission Distance	10-12 meters

Frequently asked questions

What is the default baud rate for the serial port?

The default baud rate is 9600bps.

Can AT commands be used while the module is connected to a device?

No, AT commands only work when the module is not connected; once connected, it enters transparent transmission mode.

What happens if more than 280 bytes are sent at once?

If data exceeding 280 bytes is sent in one go, the module will crash.

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