Features: 1.Using stepper motor drive pointer, with instructions of high precision, repeatability and versatility, reliability and stability, drive and control is relatively simple, etc. 2.Stepper motor is used for full range of stepping gauges, has advantages of less power consumption, longer life, higher precision and so on. 3.Adopting 316L stainless steel for long?term use even in acid?base, humid environment. IP67 protection class, also with curved glass (anti?fog function). 4.With ultra?wide working voltage design, long?term operating voltage: 9?32V, maximum up to: 36V, (1min). 5.There is a snap together with the harness connector, for firmly connected, in order that the gauges could work even in strong viberation. 6.Suitable for most vehicle modification, can be used for the engines/generating units, ships, construction machinery, agricultural machinery, automotive modification, etc. Specification: Item Type: Automotive Speedometer Material: Stainless Steel 316L Bezel + Anti-Fog Glass Install Diameter: 85mm or 3-3/8in Indication Range: 0-120KM / H Operating Voltage: 9-32VDC Input Signal: GPS Signal Backlight Color: Red Operating Current: 60mA Operating Temperature: -30-+75 Storage Temperature: -40-+85 Protection Class: IP67, Can Work Underwater 1m / 39.4in Position Functions: Needle Shows Current Speed: LED Window Shows: TRIP/COG(Choose Anyone) and ODO TRIP01(Default): One-Trip Mileage Which Will Come Back to 0 after Power off, TRIP02 One-Trip Mileage Which Accumulates After Power Off, But You Can Press Set Button for 3-5 Seconds to Clear the Data. COG: Moving Direction ODO: Recording Total Mileages Automatically and Cannot be Reset Operation Mode: LCD Display, Stepper Motor Installation Notes: 1. Open a hole with a diameter of 85mm on the panel (your cabin panel and instrument panel), insert the instrument into the hole, the panel corresponding to the instrument panel is marked with a boss, and open a small notch at this position, to ensure that there is at least 85mm (3-3/8in) instrument panel on the back of the instrument 2. After installing the instrument into the panel, screw down with the fixing ring 3. Connect the wires, the instrument shell is directly connected to the 12 / 24V power supply 4. Insert the wire harness and fix it firmly on the table How to Use: Install the instrument on the instrument panel and fix it, and then turn on the power Wiring Instructions: Red wiring - Positive Blue wiring - Negative Black Signal Wiring - Sensor Orange backlight wiring - Positive Note: Not include GPS