Specifications: - Name: Tachometer- 7 colors backlight- High precision- Size: 85mm- Signal: Pulse- Working voltage: 9-32VDC- Working current: Package included 1 X Marine Tachometer 1 X Cable 1 - 316 stainless steel frame with curved glass; - Easy installation through multi-socket connection; - (Red, Yellow, Orange, Green, Blue, Purple, White), customers can adjust any color you like - Tachometer is suitable for Car/Truck/Boat/Diesel Generator Engine/Gasoline Engine Indicating range: 0-8000RPM[85MM diameter]0-7000RPM[85MM diameter]0-6000RPM[85MM diameter]0-4000RPM[85MM diameter] 0-3000RPM[85MM diameter] Sensor specifications: 1]. Name: Tachometer sensor[2] used for gear speed measurement[3] combines the advantages of signal stability, wide operating temperature range, small size, simple assembly, etc.[4] Signal duty cycle: 475%[5] Output signal: Sine wave [6] Operating temperature: -40 to 85C [7] Inductance distance: less than 1mm [8] Tooth module: 2~6 [9] Connection method: two-wire connection [10] Protection level: waterproof IP67 Please note : Please note that we have 2 models of sensor sizes: 80mm * 18mm (length * width), 72.12mm * 16mm (length * width) Package included (as shown in the picture): 1X tachometer sensor