Network Interface - Dahua A5A21M/CG9 User Manual

interface, as shown below:

2.2.1 Network Interface

Network interface, RJ45 Ethernet port, three-speed Ethernet 10M / 100M / 1000Mbps transmission
interface for camera control, data transmission and power supply (POE function).
It is best to use shielded twisted-pair Category 6 cable in order to ensure the transmission quality, as
well as to prevent too much data retransmission and packet loss phenomenon.
2.2.2 12pin Power and I/O Interface
Sheet 2-1 lists the pin signal definition of the I/O interface.
Pin
1
2
3
4
5
6
7
Figure 2-2 76mm×76mm×46mm
Sheet 2-1
Signal Description
Power ground of the camera
Power Ground
The camera power
Power
RXD RS232 Serial receiving
TXD RS232 Serial sending
OPT_IN1 Opto-isolated input 1
OPT_IN2 Opto-isolated input 2
OPT_IN3 Opto-isolated input 3
Interface Description
Pin Signal Definition
11