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HLK-B20
Hi-Link HLK-B20 User Manual
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Shenzhen
Hi-Link
Electronic
Co.,
L
td.
HLK-B20
U
s
e
r
M
a
n
u
a
l
BLE
4.2
wireless
module
2
Table of Contents
Default Chapter
2
Table of Contents
2
1 Product Description
3
Basic Parameters
3
2 Product Overview
4
Technical Specifications
4
Hardware Description
4
Block Diagram
5
Default Pin Function
5
3 Test Board Description
6
Restore Factory Settings
6
4 Function Description
7
5 Serial Port Working State Conversion
7
6 Led Light Indication Meaning
8
7 Parameter Configuration Method
8
8 Serial Port at Command Configuration
8
AT Instruction Format
8
Ver
9
Uart
9
Net_Commit
9
Reconn
9
Ble_Status
10
Ble_Name
10
Default
10
Reboot
10
9 Configuration Tool Description
11
10 Transparent Transmission Minimum System
11
11 Bluetooth Data Transmission
12
12 Reflow Soldering Temperature Curve
14
Appendix A Document Revision History
15
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Hi-Link HLK-B20 Specifications
General
Output Voltage
3.3V
Temperature range
-40°C to +85°C
Efficiency
85%
Operating frequency
2.4GHz
Transmit power
4dBm
Antenna
PCB Antenna
Interface
UART
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