Product Features: 
-Be suitable for all kinds of tacho RPM sensors, and display the rotation speed of the engine. 
-Use moving-magnet principle to drive the needle, featuring good endurance and anti-vibration. 
-IP67 waterproof and dustproof grade. 
-Stepper motors used for full range of stepping gauges, great feature with its less power consumption, longer  life, higher precision, etc. 
-With curved glass (with anti-fogging function). 
-With ultra-wide working voltage design( long-term operating voltage: 9-32V, Maximum up to: 36V (≤ 1 min)).  

Technical Data: 

-Name:Tachometer

-Fixing dimension: 85mm(3-3/8 inches) 
-Indicating Range: 0-3000RPM; 0-4000RPM; 0-6000RPM; 0-8000RPM 
-Speed Ratio: 1-300 adjustable 
-Working Voltage: 9-32V(12V/24V) 
-Backlight: Red, Green, Blue, White , Yellow, Grass, Orange, Purple, Automatic 
-Functions: current tacho/RPM, trip hour(clear data after power off) and total hour(accumulate data after  power off) 
-Operation mode: LCD display, stepper motor 

Install Instruction:

-Open a 3-3/8" dimension and 2-3/4" depth hole, put gauge into it and fasten

-After the instrument is mounted in the panel,screw down with a fixed ring

- Connect the wire,the instrument housing is directly connected to the 12/24v power supply

-Insert wire harness,firmly locked in the table

Package Includes: 
1x Tachometer 
1x Multi-plug socket 
1x Installation Instruction