85MM RPM Tachometer Gauge Tach Sensor REV Counter with Hour Meter Gasoline Diesel 12V 24V Red Backlight 0~3000RPM 4000RPMThe sensor needs to be purchased separately, the tachometer does not include a sensor, please know, thank youFeature:* Excellent anti-fogging function.* Convenient Installation by multi-pliug socket connecting way;.* Protection grade is IP67, the whole body is completely waterproof.Specification:- Name: Tachometer- Red Backlight- High Precision- Size: 92x50mm- Voltage: 12V / 24V- Installation diameter: 85mm - Operating Current:100 MA- Speed Ratio: 1~300 adjustable - Functions: current tacho/RPM and hour - Operation mode: LCD display, stepper motor- Tachometer fit for Car /Truck/ Boat /Diesel Generator Engine /Gasoline EngineIndicating Range:0-8000RPM[85MM Diameter]0-3000RPM[85MM Diameter]0-4000RPM[85MM Diameter]0-6000RPM[85MM Diameter]Please attention:we have 4 model tachometer: 3000 rpm,4000 rpm, 6000 rpm, 8000 rmp( Digital Tachometer)Package Included(as picture):1 x Boat Tachometer1 x InstallationSensor Specification:[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 IP67Please attention:Please attention we have 2 model sensor size: 80mm*18mm (L*W) , 72.12mm *16mm(L*W)Package Included(as picture):1X Tachometer Gauge Sensor