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Parameter Range
Speed: 0–255 KM/H or MPH
RPM: 0–9000 RPM
Boost: -15~45 PSI or -1~3 BAR
Water Temp: 0~150°C or 0~300°F
Oil Temp: 0~150°C or 0~300°F
Oil Pressure: 0~150 PSI or 0~10 BAR
Voltage: 10~16V
Air-Fuel Ratio: 20:1~10:1
Exhaust Temp: 0~1300°C or 0~2400°F
Clock: 24H
Frequently Asked Questions (FAQ)
Q
What parameters can the DO904 monitor display?
A
The DO904 can display up to 10 parameters including RPM, Speed, Oil Pressure, Oil Temperature, Water Temperature, Boost, Air-Fuel Ratio, Exhaust Gas Temperature (EGT), Voltage, and Date/Clock.
Q
Does the unit support both metric and imperial measurement units?
A
Yes. You can switch between units using the SET UNIT setting at the bottom of the display — for example, switching pressure between PSI and BAR, or temperature between °C and °F.
Q
How does the alarm system work on this dashboard?
A
The alarm system monitors RPM and Speed values. When a threshold is exceeded, it triggers both an audible buzzer alert and visual warnings through 8 LED indicator lights. Alarm limits can be configured via the SET ALARM menu.
Q
Can I adjust the screen brightness on the DO904?
A
Yes. The brightness can be adjusted either manually (three brightness levels available) or automatically based on the ambient environment. The automatic mode includes a sensitivity option for adaptive adjustment.
Q
What sensors are included in the wire harness connector kit?
A
The wire harness includes connectors for Boost sensor, Oil Pressure sensor, Air Fuel Ratio sensor, Oil Temp sensor, Water Temp sensor, Exhaust Gas Temp sensor, RPM (green wire), Speed meter (red wire), power supply, and 3 spare sockets.
Q
What is the warranty policy and are there any installation requirements?
A
The product comes with a one-year warranty, which does not cover damage caused by human error or misuse. To be eligible for any warranty claim, proof of professional installation is required.