Hi-Link HLK-LD1125H-24G - Module Appearance and Interface

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1 2 3 4
2. Module Appearance and Interface
Pin interface definition: (2mm pitchpin header connector isrecommended for the interface)
Pin
Name
Remark
1
VCC
Power supply
5V power
supply
2
GND
Touchdown
3
URX
TTL serial
port receive
4
UTX
TTL serial
transmission