Car Motorcycle Digital Tachometer Tacho Gauge with Battery Overvoltage Alarm

Description

Car Motorcycle Digital Tachometer Tacho Gauge with Battery Overvoltage Alarm
Red LED Car Motorcycle Digital Tachometer Tacho Gauge with Battery Overvoltage Alarm Display Engine Speed Automatically
Features:
1.This meter use high-flux 0.36 nixietube,high performance SCM driver. Can be used in car and motorcycle which use electronic ignition.
2.It can display engine speed automatically. When the engine started,the meter change to display the engine speed.If the battery overvoltage(>15V),the display of the meter will Flashing alarm. It can measure engine speed over ten thousand circle per minutes.For example 16000r/min display -160
Operating Voltage:8v-17v;
Parameter:
working current:25mA
voltage accuracy:+/- 0.1v
speed accuracy:+/-30r/min
speed range:120-16000 r/min
Display rotate speed Overvoltage alarm
Fit for 1-8 cylinder gasoline car
Item size: 48 * 29 * 22 mm
Mounting holes: 46 × 27 mm
Wiring:
Black wire:groundwire,connect with negtive output of battery
Red wire:Power supply,connect to Electric door lock outlet wire
Blue wire:Speed signal,connect to Ignitor outlet or trigger lines
Mounting instruction
1.we suggest connect black and red wire to confirm the right display and then connect other wire.
2.speed signal come from ignitor signal.can connect to follwing:
a. wire of electronic tachometer (the signal is best)
b. lnlet wire of high voltage ignition coil (we suggest here if you don't have choice a)
c. lighter outlet wire
d. lighter trigger lnlet wire
e. trigger coil outlet wire
There is different interference make signal unstable. You can choose the best option to your car.In usually,the signal from a is best.From b is good too.But remember never connect to high voltage outlet wire of high voltage ignition coil.The hgih voltage will make meter burned.
In order to fit todifferent engine,you can adjust frequency demultiplication parameter to ensure the meter display right speed.
The way to ajust speed parameter is:push the button on Back of the board odwn,then start engine,the meter will display "SE-1" to"SE-4".Release button when the meter display what you need. Adjustment is completed. The meter will be display new parameter when you reboot.
Package include:
1set of Tachometer