Hach SC4200c User Instructions page 14

Terminal
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14 English
Table 1 Wiring information
Signal Color
A1 (input) Green
B1 (input)
0 V
5 V
A2 (output) Green
B2 (output)
Red
—
—
Output from the module
Red Output from the module
Description
Input to the module
Input to the module
Not used
Not used