SLP Series, Differential; 0 in H2O to 4 in H20, "D4" DIP Package - Straight Port The SLP Series pressure sensors are a low cost component used for measuring very low pressures. These low pressure range devices were specifically designed to accurately measure differential and gage pressure of 0 in H2O to 10 in H2O. They are meant for use with non-corrosive and non-ionic media, such as air, dry gasses and similar media. The SLP Series are differential devices that allow application of pressure to either side of the diaphragm and can be used for gage or differential pressure measurements.