52mm Car Tachometer, 6000 RPM Gauge with LCD Hour Meter, Backlight, Automatic Colour Cycle for Truck Tractor Boat, (Black Dial Black Cover CX6227B).

[Multicolor Backlight Options] Choose from red (default), green, blue, white, yellow, cyan, purple, or automatic color cycling, ensuring professional use in all lighting conditions.
[Easy Installation] Designed to fit into a 2-inch hole with 55mm clearance behind the panel, simply screw it in for convenient installation in trucks, tractors, cars, RVs, and boats.
[Detailed and Reliable Data] The 52mm 6000 RPM tachometer operates on 9-32V and features accurate pointers and digits, providing you with reliable information for your vehicle.
[Highly Accurate RPM and Hour Display] Be confident with the accurate 0-6000 RPM measuring range and the adjustable 1.0-360 speed ratio, suitable for engines.
[Built to Last] Made With a robust metal construction, this tachometer is durable and reliable, making it suitable for various automotive and marine applications.

Specifications:
Item Type: Tachometer
Voltage: DC 9-32 V
Size: approx. 52 mm/2 inches
Seven backlight colors: red (default), green, blue, white, yellow, cyan, purple, auto
Auto: cycles every minute according to the sequence above
Compatibility: suitable for trucks, tractors, cars, RVs, boats


Package list:
1 x Tachometer
1 x User Manual


How to use:
Black = Negative
Red = Positive
Blue = RPM Signal
Yellow = Backlight
White = Adjust the light/speed ratio to 7 colors