Description:The instrument adopts the cross coil to drive the pointer, the durability is good, and the seismic performance is good.Protection grade is IP67, the whole body is completely waterproof.Excellent antifogging function.With polarity reverse protection function.316 Stainless steel bezel with curved glass.The moving magnet gauge need to connect to extra resistors for 8V-16V working voltage.Specification:Material: PVC + Stainless steel + GlassPanel color:BlackFixing dimension: 85mmWorking voltage:9~32VDCWorking current: 100mAOperating temperature: -30~75Storage temperature:-40~85Levels of protection: IP67Installation Instruction:1. Opening a hole in the panel (your cabin board and dashboard) with a diameterof 85mm,Insert meter into the hole,The panel corresponding to the instrument panelis marked with a convex table,and open a small notch in this location,To ensurethat there is at least 85 mm (3 3/8) of the instrument panel at the back of the instrument.2. After the instrument is mounted in the panel,Screw down with a fixed ring.3. Connect the wire,the instrument housing is directly connected to the 12/24v power supply.4. Insert wire harness,Firmly locked in the table.Note:1. Due to the different display and different light, the picture may not reflect theactual color of the item. Thanks for your understanding.2. Please allow little differs due to manual measurement.Package Included:1 X GPS Speedometer1 X Standard Cable1 X Voltage Dropping Resistance Line1 X Manual