1,[Easy to Mount, Convenient to Wire with the Plug] Mounting size: 2 1/16 inch, or 52mm The is Easy to Follow and the Installation Takes Less than 10 Minutes. 2,[A Fine replacement fuel guage] The Needle is Smooth Sweeping and Surpasses the Original Version in (the Needle doesn't Bounce all over the Place as is Underway or in Rough Sea Conditions). It Allows the User to Remotely Monitor the Liquid Level in the Tank. This Level Gauge will Work with any Level Sender with (240-33 ohms) Resistive Output(It Can Also be Used on Truck/Car to Match Fuel Sending Unit for crude oil / Gasoline Level Monitoring. 3,[Body] IP67 waterproof and Dustproof grade; Indicating Range: Empty-Full, Working voltage: 9-32V 4,[GOOD Readability] Great Visual Contrast on Gauge Face. The Backlighting is not too Bright or Dim, Looks Really Good during the Day but Even Better at Night lit up. Type: Fuel Gauge Condition: 100% New Fixing dimension: 52mm(2 inch) or 2-1/16 inch Indicating Range: 0-100% Signal Adjustable: 0-190ohm, 240-33ohm, 240-30ohm, 0-180ohm, 10-180ohm Working Voltage: 9-32V(12V/24V) Operation mode: LCD display, stepper motor Fitment: Universal Material:ABS colour:black Package Contents: 1 * Fuel Level Gauge+Accessories Only the above package content, other products are not included. Note: Light 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.