New high quality
Body material: iron
Dimensions: mm diameter 52 mm, height 28 mm
LED display: red (1), yellow (1), blue (8)
Connection description:
Black wire (+ 12 V) for connecting positive power
Green wire connected to negative power (-12 V)
The yellow wire is connected to the sensor.
caveat:
Red line function: adjustable resistance to adjust the amount of oil,
If there is no oil, please do not use it under normal conditions.
The display is accurate and the red line can be used to adjust the amount of oil.