Difference between oil pressure switch and sensor

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 Difference between oil pressure switch and sensor 

The two parts are different in their operation but performs the same function. The oil pressure sender is a variable resistor sensor that will increase and decrease resistance as the oil pressure goes up and down. This sensor will control a gauge to go up and down with the pressure. The oil pressure switch will be a closed or open circuit. The switch depending on calibration will close a circuit turning on the oil light on the dash when the oil pressure gets below a set amount or causing a gauge to go to a set reading when you have pressure and drop to nothing if it falls below set limit.

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