Reply to "Insulated Rail Relay Based Sensor"

stan2004OGR Forum Member

Correct. Note that the two interconnecting wires carry DC voltage so polarity is important. RTR12 makes this clear with his use of the Red wire for DC+ and Black wire for DC-. On the ITSD side they go exactly as he shows. The relay board presumably will be as pictured, but in any event the white label "VCC" gets positive or DC+ (Red).

3/29/171:33 PM

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