Come with no speed sensor , Speed sensor Mounting Thread has 2 sizes : M16 (Asin:B079GXS9CF) 、M18(ASIN:B079GWJDH4) , it needs to be ordered separately
Speed ratio Setting : 2 stroke engine , the speed ratio equal to cylinder number(For example: 2 stroke,2 cylinder engine, speed ratio is 2, H-002.0); 4 stroke engine, the speed ratio equal to a half of cylinder number( For example: 4 stroke , 4 cylinder engine, speed ratio is 2, speed ratio is 2, H-002.0)
Description: -Fixing dimension: 85mm(3-3/8") -Indicating Range: 0-8000RPM -Speed Ratio: 1-10 adjustable -Working Voltage: 12V/24V -Backlight:red /br> -Operation mode: LCD display, stepper motor -Protection grade is IP67, the whole body is completely waterproof; -Excellent anti-fogging function; -316 Stainless steel bezel with curved glass; -Convenient Installation by multi-plug socket connecting way; Package Includes: 1x Tachometer 1x Multi-plug socket 1x Installation Instruction