Wire Connection

Input Type

ON State LED ON

Readback as 1

OFF State LED OFF

Readback as 0

Relay Contact Relay ON Relay Off
TTL/CMOS Logic Voltage < 1V Voltage > 3.5V

Open 

Collector

Open Collector On Open Collector Off

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Output Type

ON State LED ON

Readback as 1

OFF State LED OFF

Readback as 0

Drive Relay Relay ON Relay Off
Resistance  Load    

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