Sensor Leak????

I spent several minutes searching the forum but came up empty. Can you tell me what the name of the sensor that is near the oil filter. Im thinking its the oil pressure sending unit?

I have had a small leak for a month or so now, but odd is that none of my fluids are showing low. I got under the car and noticed the sensor above was soaked in what i think is oil. I say that because the power steering pump is also is wet in a few places and its fluid is also tan/brown. Since the power steering is above the sensor (unless it sprays from the senor) I have a hard time believing that it is coming from the sensor.

Any Ideas????

Thanks for the confirmation. I am certain now that it is oil. I can not locate where its coming from as the view is blocked. The oil is dripping off of one of the bolts of the power steering pump. Anyone have any ideas?