Feature: Widely used car, truck, yacht, Boat and marine . Self-calibration at start-up ensures the meter operates optimally, smart and effortlessly. LED digital screen. Test range: 0-1.00Mpa; When the Oil Pressure is ≤0.08Mpa,Gauge flash for alarm . Oil Pressure Sensor: 1/8NPT Sensor The red wire is connected to the positive pole of the power supply, and the black wire is connected to the negative pole of the power supply<br><br>Gauge Install diameter: Φ52mm (2 inch) Note: Installation guide not included, we strongly recommend you professional installation. Please check as much as possible to make sure the item is what you need. Material: plastic colour: As shown<br><br>Package Contents: 1 x oil pressure strap sensor<br><br>Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.