English 
The gauge can be change:
Tachometer with Digital Hour Meter : 0-3000/4000/6000/7000/8000RPM
Water Temperature gauge: 40-120degree
Oil Pressure gauge: 0-5bar/0-10bar
Volt meter: 8-16V/16-32V
Fuel Level gauge: 0-190ohm/240-330hm
Four positions: Accessory - Off - Ignition/Accessory - Start. Spring return to Off.
Key switch is constructed from engineering thermoplastic and is fully sealed using O-rings and ultrasonic welding to protect.
switch to ip67 (with connector installed).
Plastic face nut and nickel-plated brass backing nut. Supplied with two matching keys, and with protective key boot.
Our gauge panel switches gauge panel set with sender, 12V/24V can support. The gauge panel switches gauge panel set can be used on marine , boat , vehicle and so on . Marine instruments and meters refer to the instruments and meters used to measure and control relevant parameters and observe and measure the measured objects during the operation of marine . Marine generally have left engine quarter meter, left engine tachometer, speed meter, right engine tachometer and right engine quarter meter. The quarter meters are generally water temperature meter, oil pressure meter, 12V voltmeter, fuel meter, and others include rudder position meter, stern transmission lifting meter, engine speed synchronization meter, generator voltmeter and generator ammeter. You can select which are needed on gauge panel switches gauge panel set.
Speed ratio adjustment: Press and hold the black rubber button for 3 seconds toenter the speed ratio setting mode, if you release the buttonfor 3 seconds, Exit the ratio setting mode, and automaticallsave the set data. After entering the setting mode , press and hold the buttonto increase the value , release the button , and then press andhold the button , the number keeps decreasing : Speed ratioadjustment range : 1-360 , adjust to the speed ra tio you wantrelease the button for 3 secon ds , the number is automaticallsaved. If your sensor is installed on the flywheel , the speed ratiovalue is equal to the number of engine gears : if the speedsignal is taken from the W point signal , The speed ratio isequal to half of the number of electrodes ( Poles / 2 ). Default ratio : 138.
