10: Channel 2 current output positive terminal
11: Channel 2 current output negative terminal
12: Channel 1 current output positive terminal
13: Channel 1 current output negative terminal
14: T/P: PT1000 Temperature resistance interface 1
15: T/P: PT1000 Temperature resistance interface 2
16: NC: no need
17：Glass channel 1 PH/ORP electrode transparent interface
positive end
18：REF channel 1 PH/ORP electrode black interface negative end
19：Glass channel 2 PH/ORP electrode transparent interface
positive end
20：REF channel 2 PH/ORP electrode black interface negative end
Note: AC: 100-240VAC±10% 50/60Hz
DC: 12-24V
Power: 5W
Relay: Withstand voltage 240VAC, maximum current 0.5A
Current output: Maximum tolerance 500Ω
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