SPECIFICATIONS

Brand Name: HL-LINK
Origin: Mainland China
Hign-concerned Chemical: None
Type: Bluetooth Module
Communication Interface Type: UART TTL
Antenna Connection Method: built-in
Network Support: No
Transmit Power: 3-4dBm
Audio Interface Type: ADC
Voltage: 3.3V
Information Delivery Content: Data
Frequency Band: 2.4G
Distance range: 10-30m
Chipset: BK3432
Work current: <10mA
Work temp.: -40~105C
Baud rate: 9600-921600bps
Connection: 1
Work mode: slave

2.4G/1T1R Low Cost BLE4.2 BK3432 Bluetooth Module
    HLK-B20 is an new low-consumption Bluetooth BLE 4.2 control module made by Hi-Link. This product is a Bluetooth-compliant module based on universal serial interface. It has built-in BLE 4.2 protocol stack, which can realize data conversion between user serial port and Bluetooth interface.
 
    We develop and provide a wealth of testing tools and documents, and provide APP Demo for testing, so that users can quickly get familiar with this module and use.  
    We can also provide flexible and customized development services for the specific needs of our customers.
 
Notes: 
    To ensure that all configuration procedures are correct, first reset the module to factory settings. Modules that are already in factory mode can skip this step.  
    Provide 5V (1000mA) power supply to power on the module, wait for about 1 second,  let the module start up. After the startup is completed,  pull down the ES0 (PIN5) pin for more than 6S. When the LED corresponding to the STA is always on, it means that the module is restored the factory settings successfully, then release the ES0 pin, the system will automatically restart. The system is already in factory mode after rebooting.

Detailed Images: 


Basic parameters 
* High-speed ARM9E core MCU
* 2.4G/1T1R, BLE 4.2
* 160k programming space, 20KB RAM
* Power supply voltage 0.9-3.6v
* Ultra low supply voltage, low power consumption
* Built-in crystal, high stability
* Small chip package 4x4
* Rich peripheral interface, SPI, I2C, ADC, UART, PWM, GPIO
* Widely used in the Internet of Things
* High-speed 10-bit multi-channel ADC with internal filtering
* Easy to connect, fast speed

Specifications 
Transfer Protocol
Bluetooth standard : BLE 4.2
Supply voltage
0.9-3.6V
Air speed
1Mbps
Number of channels
2.4g:1-14
Frequency Range
2400-2480MHZ
Transmit power
4DB
Receiving sensitivity
-96dbm
Received power
5.1ma
Transmit power
4.5ma
Antenna type
External /internal antenna
Other parameters
Status indicator
Status indication


Environmental standard
Operating temperature: -40-125℃
Working humidity: 10%-90%RH (Non-condensing)
Storage temp.: -40-90℃
Storage humidity: