APEXi Auto Timer - Product Operation; Part Names and Functions; Setting Minimum Battery Voltage Warning; Setting the A;F Value

●To turn engine OFF during a TIMER countdown…
Duringcountdown,

【Hold the knob to the LEFT】
Or,
【Hold the knob to the RIGHT】
ThiswillturntheTIMEROFFtherebyshuttingtheengineOFF.
（Ignitionkeymustberemoved）

●Changing the after idling time during TIMER countdown…
DuringTIMERcountdown,

【Tilt knob UP】
toincreasetime
【Tilt knob DOWN】
todecreasetime.
●To activate Setting Mode…
Whilebatteryvoltageisbeingdisplayed,
【Hold the knob to the RIGHT】
willflashindicatingthatthesetting
modehasbeenactivated
●After setting…
【Hold the knob to the LEFT】
ThiswillreturntotheDisplayMode

When actual battery voltage attains lowerthan set voltage
point,theindicatorstartsflashing.

●To enter the setting mode…
WhiledisplayingＯ
２
sensorvoltage（mV）
【Hold the knob to the RIGHT】
Willflashindicatingsettingmode

●How to set…
TheＯ
２
sensorvoltageandA/Fwillalternatelydisplay
（Ｏ
２
willdisplaylonger）
InputtheＯ
２
sensorvoltagecorrespondingtothedisplayedA/F

data
TheA/Fsensordatacanbechangedintheprevioussection
●Once setting is complete…
【Hold the knob to the LEFT】
●To enter the setting mode…
WhiledisplayingA/F
【Hold the knob to the RIGHT
Willflashindicatingsettingmode

●How to set…
TheA/FandＯ
２
sensorvoltagewillalternatelydisplay
（A/Fwilldisplaylonger）
InputtheA/FdatacorrespondingtothedisplayedＯ
２
sensor
voltage
TheO
2sensordatacanbechangedinthenextsection
●Once setting is complete… 
【Hold knob to the LEFT】
●To activate Setting Mode…
WhileAfterIdlingisbeingdisplayed,
【Hold the knob to the RIGHT】
willflashindicatingthatthesetting
modehasbeenactivated
●For Calculation Mode…（Manual or Auto）
AfterIdlingtimescanbeselectedthroughManualorAutomodes.
TotogglebetweenManualorAutomode,
【Hold the knob to the RIGHT】

●After setting…
【Hold the knob to the LEFT】
ThiswillreturntotheDisplayMode
Operation
５
PartNamesandFunctions
７SegmentLED LED ４WayKnob
Glossaryofterms:
【Hold】Tiltknobover0.5secinspecifieddirection
【Activate】Tiltknoblessthan0.5secinspecifieddirection
Display Parameters
● A/F ratio
● Ｏ
２
Sensor Voltage
● Battery Voltage
● Countdown time
TurningtheIGkeyONwillactivatethedisplaymode.
（Powermustbeon）
Contentsmaybecheckedthroughflashinglights
Display
To toggle between A/F ratio,O2Sensor Voltage, Battery Voltage,After
Idling Time,
【Activate the knob either UP or DOWN】
ChooseDisplayParameter
Battery Volt-
age
After Idle Time 
A/FRatio
O
2
Sensor
Voltage
【Activate the knob either UP or
DOWN】
（Ｖ）
（Ｖ）
Display Selection
Settheunit
Parameters that can be Set
● A/F ratio according to O
2
Sensor Voltage
● O
2

Sensor Voltage according to A/F ratio
● Minimum Battery Voltage Warning
● Countdown Time
While in display mode  and while the parking brake is activated,
【HoldtheknobtotheRIGHT】ThiswillactivatetheSettingmode
forthatparameter.
TheLEDwillflashtoconfirmsettingmode.
DuringSettingMode【HoldtheknobtotheLEFT】toend.
SettingtheMinimumBatteryVoltageWarning
SettingtheAfterIdlingTime
【Activate the knob either UP or
DOWN】
Set the minimum warning battery
voltage
Choose between10.0V〜15.0Vin
0.1Vincrements
How to Set
If display looks like below,The unit is
in【Auto Mode】
【Tilt the knob  either  to  the
RIGHTorLEFT】toselect
parameters
【Tilt  the  knob  either  UP or
DOWN】tochangevalues
【Activate the knobeither UP
orDOWN】toselectAfterIdling
Times
Range:  0  sec 〜 10 min in１６
increments
Manual Mode
If display looks like below,The unit is
in【Manual Mode】
“Minute” “Second”
Auto Mode
MAX Countdown
Value
Auto Calculation
Rate
MIN Countdown
Value
This sets the
maximum
amount of
idle time.

Value de-
notes MIN-
UTES. Please
choose
between 1
min〜8 min
This sets the
auto calcula-
tion rate of
the Timer.

There are
three modes,
“H” High
“n” Normal
“L” Low
This sets the
minimum
amount of
idle time.
The vehicle
will always
idle for at
least this
amount of
time.
Choose
between 0~60
seconds in 10
second
increments.
【Hold knob to the RIGHT】
Select Calculation Mode
How to Set
Hold
Select
【Hold knobto the LEFT】toreturn to
DisplayMode
Ａ／Ｆvalue,Ｏ
２
SensorVoltageSetting
ThisproductcontainsvariousA/FandO2Sensorvalues.
ThevaluesrangebetweenA/Fvalue(1)−Ｏ
２
sensorvoltage(1)
……A/Fvalue(8)−Ｏ
２
sensorvoltage(8)
PleaseusethechartbelowwhenchangingthesettingA/F−Ｏ
２
sensorvoltagedata
SettingtheＡ／ＦValue
Table１A/Fvalue-O
2
sensorvoltagedatachart
A/F
O
2
SensorV
10.0 12.0 14.0 14.6 15.0 16.0 18.0 20.0
960 900 820 450 100 060 040 020
【Tilting knob to RIGHT or
LEFT】will change the range
of A/F , O2 data (see Table1)
A/FValue
【TiltingknobeitherUPor
DOWN】will  allow  setting  of
desiredA/Fvalue.
Ｏ
２
sensorV(1) Ｏ
２
sensorV(8)
A/Fvalue(1) A/Fvalue(8)
A/FandO2willalternatelydisplay
（A/Fwilldisplaylonger）
Procedure
Ｏ
２
sensorvoltage（mV）
【Tilting  knob  either  UP  or
DOWN】will  allow  setting  of
desiredO2value.
【Tilting knob to RIGHT or
LEFT】will change the range
of A/F , O
2 data (see Table1)
A/Fvalue(1) A/Fvalue(8)
Ｏ
２
sensorV(1)
Ｏ
２
sensorV(8)
O2andA/Fwillalternatelydisplay
（O
2willdisplaylonger）
Ｏ
２
SensorVoltageSetting
Procedure
ToturnOFFtheAutoTimer
Turn the TIMER OFF when not in use.
●To turn the TIMER OFF…
Duringdisplaymode,
【Hold the knob to the LEFT】
The7segmentLEDwillread『ＯＦＦ』shuttingOFFtheunit




●To turn the TIMER back ON…
WhiletheunitisOFF,
【Hold the knob to the LEFT】
Or,
【Hold the knob to the RIGHT】

Other…
ThisunitcalculatesatheoreticalA/F
value based upon the factory installed
O
2
sensor.O
2
sensor  voltage  output
characteristics follow the chart to the
right, where rich conditions produce a
near1Vsignalwhilealeancondition
producesanear 0.1Vsignal. Although
theA/FvalueiscalculatedoffofthisO
2

sensorvoltage,factorssuchasexhaust
temperaturepreventtheO
2
sensorfrom
producing a stable andconstant read-
ing.Pleaseusethisfeatureonlytodeter-
minerichorleanconditions.Also,differ-
ent O
2
sensorswillproducedifferent
voltagereadings.
AbouttheA/Fratiovalues…
If the O2 sensor has not warmed up
enough,
 will flash red and green.
Once the O2 sensor warms up, the display
mode will initiate.
When the A/F reaches over 10.0,

will flash red.
When the A/F goes under 20.0

will flash green.
０sec
１０sec
２０sec
３０sec
４０sec
５０sec
１min
１min３０sec
２min
２mi３０Sec
３min
４min
５min
６min
８min
１０min
This will return to the Display Mode
ThiswillreturntotheDisplayMode
ItreturntotheDisplayMode