Use moving-magnet principle to drive the needle, featuring good endurance and anti-vibration.Function: instrument with stepper motor pointer, with polarity protection, but also with over voltage protection and the instrument can continue to work between 9-32V, the overall waterproof, anti-fog, anti-over-voltage and anti-vibration.
Accurate display engine RPM, and with the LCD display clear display hour, with instructions of high precision, repeatability and versatility, reliability and stability, drive And control is relatively simple and so on.
The main application areas: boats, construction machinery, vehicles, generators, engines, agricultural machinery et.

Specifications
Brand: Jiecaizi
Name: 8000RPM Tachometer
Materials: Black dial face
Adjustable speed ratio: 1-12 
Range: 0 ~ 8000RPM
Voltage: 12V / 24V
Backlight: LED back lighting, blue color at night. 
Mounting holes diameter: 3-3/8” or 85mm

AMP 8-pin connector wiring
Touch-sense button to change the setup parameters.
Easy setup for pulse/rev.
Red lighted pointer.

Features
1.Convenient Installation by pliug socket connecting way.
2.Excellent anti-fogging function.
3.Protection grade is IP67, waterproof.
4.Pluse Signal from tacho sensor, engine, alternator, ignition coil, crankshaft sensor, etc.

This tacho can hooked up to the "W" terminal on vehicle alternator. Many diesel engines and most inboard gas boat engine alternator have this connection. It can also be working with tachometer sender or ECU of the car (pulse signal)

Install Instructions:
1.Before installation , firstly ,to open a hole (Dia:85~87mm) of the panel, make sure there is a space with (70mm backyard of panel) as well
2.Put the gauge in the hole.
3.Using M4 nut and C type bracket to seal up the gauge

Package Include:
1 x Tachometer
1 x Instructions
1 x wiring harness