2 wire control vs 3 wire control | Solar panel wholesaler

2 wire control vs 3 wire control

Best answer


2 wire sensor is basically a loop powered device without requiring a separate supply voltage(the source voltage is supplied to the destination device) where as the 3 wire sensor is a self powered device meaning,you supply source voltage to the sensor and it can drive a 4-20 ma input device directly without the destination device requiring any supply voltage.

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