Specifications:<br> - Name: Tachometer- 7 colors backlight- High precision- Size: 85mm- Signal: Pulse- Working voltage: 9-32VDC- Working current:<br> Package included<br> 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<br> Indicating Range:<br> 0-6000RPM [85MM Diameter]<br> Sensor Specifications:<br> 1]. Name: Tachometer sensor[2] Used for gear rotation speed measurement[3] It has the advantages of signal stability, wide operating temperature range, small size, and simple assembly[4] Signal duty cycle: 475%[5] Output Signal: sine wave[6] Operating temperature: -40 to 85[7] Inductance distance: less than 1mm[8] Tooth module: 2~6[9] Connection method: two-wire connection[10] Protection level: waterproof IP67 Please note: We have 2 models of sensor size: 80mm * 18mm (length * width), 72.12mm * 16mm (length * width) Package included (pictured): 1X tachometer sensor