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Hi - I have put a LJ12A3-4-Z/BX sensor (blue tip) and have connected it to 12 VT dc supply with a 15 ohm and 10 ohm resistor per Tom's sketch. My problem is I only get 2.2 VT on the signal lead when the sensor is activated.I also get 5.5 vt when metal is away or a floating voltage. I want to get 3.5 VTor more. What can I change on the divider to increase the output voltage? Is there a test for the sensor? Thank you.