Hign-concerned Chemical:NONENumber Of Cylinders:4Placement on Vehicle:Boat Car TruckCountry/Region of Manufacture:ChinaInterchange Part Number:TachometerSpecial Features:tachometer boatItem Weight:300gItem Height:85mmItem Width:85mmItem Length:85mmManufacturer Part Number:TachometerBrand Name:ZMFJHOrigin:Mainland ChinaOEM NO.:Tacho GaugeMaterial:Plastic ShellBacklight Color:7 color BacklightGauge:Waterproof Tacho Gauge 52MMIndicating Range:0-3000RPM 4000RPM 6000RPMProtection Class:IP67Tacho Sensor:M16/M18Support Customized, drop shipping , wholesale 85mm Waterproof Tachometer 0-3000/0-4000RPM Car Boat Tacho Meter Gauge Hourmeter 7Color Backlight Tacho Sensor M16/M18 RPM Meter 85MM Diesel Engine Tachometer Sensor RPM Gauge REV Counter 0-3000RPM with Digital Hourmeter 7 Color Backlight Optional 12V 24V Feature: 1.Racing look enhance the characteristic to your car/vehicle 2. with installation manual. 3. 7 Color Backlight 4.High Precision 5.Fitment : Tachometer fit for Car /Truck/ Boat /Diesel Generator Engine /Gasoline Engine 6. 0-3000RPM 4000RPM 6000RPM Specification: Materials:stainless steel+nickel-plated plastic Operating Voltage:12V/24V Connectioning:Red-Battery(+9-32VDC) Blue-Battery(-) Black-Signal, Orange-Blacklight(+9-32VDC) Indicating Range:0-4000RPM, 0-3000RPM,0-6000RPM Input Signal: Pluse Signal from tacho sensor, engine, alternator, ignition coil, crankshaft sensor, etc. Adjustable speed ratio: 1-300 Protection Class: IP67,can work underwater 1m position Package: 1x Tachometer 1x Installation Instruction(not included sensor) Sensor: M16/M18 Package: 1 X Sensor( not inlcude Gauge)