Optiview IRSPD 22X Manual page 8

4.1 Code Switch Place
Systems setting depend on the code swith inside dome camera, as following picture:
Open the code swith cover, the relative code switch site and connecting wire are shown
below for reference.
The up code switch for dome address, the down for setting
protocol, baud rate and relative RS-485 matching resistance.Below picture for indicate
the code switch ON & OFF:
IRSPD 22X IR SPEED DOME
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the communication