HLK-B25 HLK-B25 --EngrWorld

HLK-B25 is a BLE5.3 master-slave integrated Bluetooth-to-serial transparent transmission module developed and produced by Hailingke Electronics. Various devices with serial ports can easily and quickly use Bluetooth for wireless data transmission and reception through this module.

This product can be set to work as a Bluetooth slave device or a master device. The master mode supports connecting to 1 slave, and the slave mode supports a maximum of 1 master connection.

With the serial port-Bluetooth bidirectional transparent transmission function of this module, users do not need to understand complex Bluetooth protocol stacks. They only need to connect the serial port of their device or MCU to this module, and the module will automatically complete the bidirectional data forwarding between the serial port and Bluetooth (GATT). It is equivalent to a bridge between the user's MCU serial port and Bluetooth devices, enabling the user's serial port device to have Bluetooth wireless transmission functionality.

It supports AT command mode, and basic parameters of the module, such as device name and serial port baud rate, can be queried or set through serial port AT commands.

This module provides rich testing tools and user documents, including a mobile phone APP Demo, to facilitate users to quickly get familiar with and apply the module.

The HLK-B25 provides bidirectional transparent transmission between serial port and Bluetooth, offering a simple and flexible data channel that can be widely applied in various products requiring wireless data transmission via Bluetooth.

Common application scenarios are exemplified as follows:

 Smart home/home appliances

Controlling smart sockets, smart lights, smart door locks, etc., through mobile phones

 Internet of Things

Wireless data transmission between mobile phones and devices, as well as between devices

 Instruments and meters

Wireless data reading and parameter configuration via Bluetooth, etc.

 Industrial and agricultural control

Wireless connection to various control or sensing devices via Bluetooth for reading and control, etc.

 Medical and health care

Health data monitoring, wireless care devices, etc.

 Automotive electronics

Wireless detection and control, etc.

 Toy and entertainment

Bluetooth remote control, wireless control and transmission

 More possibilities are waiting for you to explore

	类型	描述
	产品类型	蓝牙模块
	制造商	Shenzhen Hi-Link
	厂牌	Hi-Link
	封装/规格	贴片式
	接口类型	UART/PWM/GPIO/I2C/SPI/ADC
	发射功率	-20dBm ~ +8dBm 可调
	工作电压（Vin)	DC 1.8-3.4V (Typ 3.0V)
	工作电流	~4mA (可配置参数调优)
	接收灵敏度	-92dBm
	工作温度	-40℃ ~ +85℃
	长宽高	14 × 9.5 × 2mm

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