English 
digital speedometer for boat
How :
1. The red line is the power line of the speedometer. Because the clock of the speeometer needs to work continuously, the red line must always be powered and can be connected behind the power fuse.
2. Black wire, the ground wire of the speedometer, connect any grounding wire.
3. Yellow line, speedometer working line, after the yellow line is powered on, all parts of the tachometer start to work, and the light on the panel is on. The yellow wire is connected to the power line behind the ignition key switch. After turning on the key switch, the speedometer starts to work.
4. The green line is the signal line of the speedometer and connected to the trigger signal end of the igniter. According to the different use occasions, it can be divided into automobile and motorcycle, with the main features:
1. The arc-shaped LED light column dynamically displays the speed.
2. Overspeed warning function.
3. Cylinder number setting function, easy to adapt to various models.
4. Flexible signal input mode, easy to install and use.
5. Demo mode function.
Digital speedometer for boat:
1. Rated ship speed when the rated power, rated speed and water depth are sufficient, the speed that the ship can reach in still water is called the rated ship speed, also known as the delivery ship speed, which is the highest ship speed of the ship.
2. In order to ensure the safety of the main engine, appropriate power reserve of the main engine must be reserved. Therefore, the main engine operates according to the common output power at sea, usually 90% of the rated power, and the corresponding speed of the main engine is 96% - 97% of the rated speed. The speed of the ship at this time is called the speed of the ship at sea. The speed of a ship at sea is divided into full load
3. Speed of ships in the port. Ships need to change speed frequently. In order to protect the main engine and change speed in time, the power of the main engine will be reduced and the ship speed will also be reduced. Generally, the maximum speed of the main engine in the port is 70% - 80% of the common speed at sea.
4. Average speed the speed of a ship is the speed of the ship under the influence of wind, current, waves, etc. The speed of a ship is the speed of its actual operation.
Get a Quote / Info