Hign-concerned Chemical:NONENumber Of Cylinders:4Placement on Vehicle:speedometer carCountry/Region of Manufacture:ChinaInterchange Part Number:tachometer motorcycleSpecial Features:tachometer boatItem Weight:400gItem Height:85mmItem Width:85mmItem Length:85mmManufacturer Part Number:tachometer carOrigin:Mainland ChinaOEM NO.:85mm Tacho meterMaterial:Plastic Shell85mm Tachometer 3000RPM With Hourmeter Truck Car Boat Diesel Engine Tacho Meter RPM Gauge REV Counter With Backlight Tacho Meter 85mm Tachometer 3000RPM With Hourmeter Truck Car Boat Diesel Engine Tacho Meter RPM Gauge M18 / M16 Car Boat Tachometer Sensor Sensor Feature: [1].Name: Tachometer Gauge Sensor [2] Use for Gear Rotation Speed Measurement [3] Combining The Advantages of Stable Signal, Wide Range of Operating Temperature, Small Size, Simple Assembly, Etc [4] Signal Duty Factor: 475% [5] Output Signal: Sine Wave [6] Operating Temperature:-40 to 85 [7] Inductance Distance: Less Than 1mm [8] Tooth Module: 2~6 [9] Connecting Way: Two Wires Connecting [10] Protection Rank:Waterproof IP67 Gauge Feature: 1.Racing look enhance the characteristic to your car/vehicle 2. with installation manual. 3. Red Backlight 4.High Precision 5.Fitment : Tachometer fit for Car /Truck/ Boat /Diesel Generator Engine /Gasoline Engine 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:0-3000RPM 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