CASIO PRG40T-7 - Owner's Manual Immediate Download

2271-1

Module No. 2271

GETTING ACQUAINTED

Congratulations upon your selection of this CASIO watch. To get the most out

of your purchase, be sure to carefully read this manual and keep it on hand

for later reference when necessary.

Applications

The built-in sensors of this watch measure direction, altitude, barometric

pressure, and temperature. Measured values are then shown on the display.

Such features make this watch useful when hiking, mountain climbing, or

when engaging in other such outdoor activities.

Warning!

· The measurement functions built into this watch are not intended for

taking measurements that require professional or industrial precision.

Values produced by this watch should be considered as reasonable

representations only.

· When engaging in mountain climbing or other activities in which losing

your way can create a dangerous or life-threatening situation, always

be sure to use a second compass to confirm direction readings.

· CASIO COMPUTER CO., LTD. assumes no responsibility for any loss,

or any claims by third parties that may arise through the use of this

watch.

(Light)

About This Manual

· Button operations are indicated using the

letters shown in the illustration.

· Each section of this manual provides you

with the information you need to perform

operations in each mode. Further details

and technical information can be found in

the "REFERENCE" section.

GENERAL GUIDE

· If the digital display of your watch is continuously changing, see

"Auto Display Function" for information on how to stop it.

· The illustration below shows which buttons you need to press to navigate

between modes.

· In any mode, hold down D for about one second to return to the

Timekeeping Mode.

· You can use buttons B, C, and E to directly enter a sensor mode from

the Timekeeping Mode or from another sensor mode. To get to a sensor

mode from the Recall, Alarm, or Stopwatch Mode, you must go to the

Timekeeping Mode first.

Press D.

Recall Mode

Stopwatch Mode

Alarm Mode

Sensor Modes

Altimeter Mode

Digital Compass Mode

Barometer/

Thermometer Mode

Timekeeping Mode

Press B.

TIMEKEEPING

Use the Timekeeping Mode to set and view

the current time and date.

To reset the seconds count to zero

1. In the Timekeeping Mode, hold down A

until the second digits start to flash, which

indicates the setting screen.

2. Press E to reset the seconds count to 00.

· Pressing E while the seconds count is

in the range of 30 to 59 resets the

seconds to 00 and adds 1 to the

minutes. In the range of 00 to 29, the

minutes count is unchanged.

3. Press A to exit the setting screen.

Hour : Minutes

PM indicator

Seconds

Month Day

Day of week

Year

To set the time and date

1. In the Timekeeping Mode, hold down A

until the second digits start to flash, which

indicates the setting screen.

2. Press D to move the flashing in the

sequence shown below to select other

settings.

Seconds

Hour

Minutes

Day

Month

Year

12/24-Hour

Format

3. While a setting is flashing, use E (+) and B () to change it.

· When the 12/24-hour setting is selected, press E or B to toggle

between 12-hour (12H) and 24-hour (24H) timekeeping.

4. Press A to exit the setting screen.

2271-2

DIGITAL COMPASS

A built-in bearing sensor detects magnetic north and indicates one of 16

directions on the display. Direction readings are performed in the Digital

Compass Mode.

· You can calibrate the bearing sensor if you suspect the direction reading is

incorrect.

To enter and exit the Digital Compass Mode

1. While in the Timekeeping, Barometer/Thermometer, or Altimeter Mode,

press B to enter the Digital Compass Mode.

· At this time, the watch immediately starts a Digital Compass operation.

After about two seconds, letters appear on the display to indicate the

direction that the 12 o'clock position of the watch is pointing.

2. Press D to return to the Timekeeping Mode.

To take a direction reading

1. Enter the Digital Compass Mode.

2. Place the watch on a flat surface or (if you

are wearing the watch), make sure that

your wrist is horizontal (in relation to the

horizon).

3. Point the 12 o'clock position of the watch in

the direction you want to measure.

4. Press B to start a Digital Compass

measurement operation.

· After about two seconds, the direction

that the 12 o'clock position of the watch

is pointing appears on the display.

· Also, four pointers appear to indicate

magnetic north, south, east, and west.

· After the first reading is obtained, the

watch continues to take direction

readings automatically each second, for

up to 30 seconds.

· The COMP indicator flashes on the

display while a measurement is in

progress.

· The direction value that appears on the

display represents the clockwise angle

formed between magnetic north (which

is 0 degrees) and the displayed

direction.

Direction

Direction value (in degrees)

Timekeeping Mode time

Magnetic north pointer

12 o'clock position

WSW

ESE

NNW

Note

· Note that taking a measurement while the watch is not horizontal (in

relation to the horizon) can result in large measurement error.

· Pressing B while in the Digital Compass Mode starts a new direction

measurement operation.

· The following table shows the meanings of each of the direction

abbreviations that appear on the display.

· You can adjust the rotary direction bezel so

that the "N" is aligned with the magnetic

north pointer. This correctly aligns all of the

markings on the bezel.

· The Digital Compass operation is

automatically interrupted whenever an

alarm (Daily Alarm or Hourly Time Signal)

sounds. If this happens, start the Digital

Compass operation again from the

beginning.

· See "Digital Compass Precautions" for other

important information about taking direction

readings.

Direction Meaning

Direction

Meaning

Direction

Meaning

Direction

Meaning

Direction bezel

NNE

ESE

SSW

WNW

North-

northeast

East-

southeast

South-

southwest

West-

northwest

Northeast

Southeast

Southwest

Northwest

East-

northeast

South-

southeast

West-

southwest

North-

northwest

ENE

SSE

WSW

NNW

North

East

South

West

BAROMETER/THERMOMETER

This watch uses a pressure sensor to measure air pressure (barometric

pressure) and a temperature sensor to measure a temperature.

· You can calibrate the temperature sensor and the pressure sensor if you

suspect that readings are incorrect.

Barometric pressure graph

(unit: 1hPa (mb)/0.05 inHg)

Temperature

Barometric pressure

A rising graph generally means improving weather.

A falling graph generally means deteriorating weather.

Note that if there are sudden changes in weather or

temperature, the graph line of past measurements may run

off the top or bottom of the display. The entire graph will

become visible once barometric conditions stabilize.

The following conditions cause the barometric pressure

measurement to be skipped, with the corresponding point on

the barometric pressure graph being left blank.

· Barometric reading that is out of range (260 hPa/mb to 1100 hPa/mb or

7.65 inHg to 32.45 inHg)

· Sensor malfunction

· Dead batteries

About Barometric and Temperature Measurements

· Barometric pressure and temperature measurement operations are

performed as soon as you enter the Barometer/Thermometer Mode. After

that, temperature measurements are taken every five seconds for the first

three minutes, and then taken every five minutes thereafter.

· The BARO indicator flashes on the display while a measurement is in

progress.

· The barometer automatically takes measurements every two hours

(starting from midnight), regardless of what mode you are in. The results of

these measurements are used for the barometric pressure graph.

· You can also perform a barometric pressure and temperature

measurement at any time by pressing C in the Barometer/Thermometer

Mode.

Barometer and Thermometer Precautions

· The pressure sensor built into this watch measures changes in air

pressure, which you can then apply to your own weather predictions. It is

not intended for use as a precision instrument in official weather prediction

or reporting applications.

· Sudden temperature changes can affect pressure sensor readings.

· Temperature measurements are affected by your body temperature (while

you are wearing the watch), direct sunlight, and moisture. To achieve a

more accurate temperature measurement, remove the watch from your

wrist, place it in a well ventilated location out of direct sunlight, and wipe off

all moisture from the case. It takes approximately 20 to 30 minutes for the

case of the watch to reach the actual surrounding temperature.

· You can change the measured barometric pressure unit between hecto-

pascals/millibars (hPa/mb) and inchesHg (inHg). See "Changing the

Barometric Pressure and Temperature Units" for details.

· You can change the measured temperature value displayed by this watch

between Celsius (

°C) and Fahrenheit (°F). See "Changing the Barometric

Pressure and Temperature Units".

Not visible on

the display.

Understanding the Barometer/Thermometer Screen

Press C to enter the Barometer/Thermometer

Mode.

· Barometric pressure is displayed in units of

1hPa/mb (or 0.05inHg).

· Temperature is displayed in units of 0.1°C

(or 0.2

°F).

· The displayed barometric pressure value

changes to xxxx hPa/mb (or inHg) if a

measured barometric pressure falls outside

the range of 260 hPa/mb to 1100 hPa/mb

(7.65 inHg to 32.45 inHg). The barometric

pressure value will be displayed again as

soon as the measured barometric pressure

is within the allowable range.

· The displayed temperature value changes to xx. x °C (or °F) if a

measured temperature falls outside the range of 10.0

°C to 60.0°C (14.0°F

to 140.0

°F). The temperature value will be displayed again as soon as the

measured temperature is within the allowable range.

· Some countries refer to the barometric pressure unit hecto-pascal (hPa) as

millibars (mb). It really makes no difference, because 1hPa = 1mb. In this

manual, we use hPa/mb or hPa (mb).

Barometric Pressure Graph

Barometric pressure indicates changes in the atmosphere. By monitoring

these changes you can predict the weather with reasonable accuracy. The

barometric pressure graph shows the barometric readings for the past 26

hours. The flashing point on the right of the display is the point for the newest

measurement. Note that pressure graph readings are relative to the newest

measurement point. One dot above the newest point is plus 1hPa(mb)/

0.05inHg, while one dot below is minus 1hPa(mb)/0.05inHg. The following

shows how to interpret the data that appears on the barometric pressure

graph.

2271-3

ALTIMETER

A built-in altimeter uses a pressure sensor to detect the current air pressure,

which is then used to estimate the current altitude. The watch is pre-

programmed with ISA (International Standard Atmosphere) preset values,

which are used to convert air pressure readings to altitude values. If you

preset a reference altitude, the watch will also calculate the current relative

altitude based on your preset value. Altimeter functions also include data

storage memory and an altitude alarm.

Important!

· This watch estimates altitude based on air pressure. This means that

altitude readings for the same location may vary if air pressure changes.

· This watch employs a semiconductor pressure sensor, which is affected by

temperature changes. When taking altitude measurements, be sure to do

so while ensuring that the watch is not exposed to temperature changes.

· Do not rely upon this watch for altitude measurements or perform button

operations while engaging in sports where there are sudden altitude

changes, while sky diving, hang gliding, or paragliding, or while riding a

gyrocopter, glider, or any other aircraft.

· Do not use this watch for measuring altitude in applications that demand

professional or industrial level precision.

How the Altimeter Works

With the Preset Values (No Reference Altitude)

· The watch measures the air pressure at your current location and uses the

built-in ISA values to convert it to the equivalent altitude.

With a Reference Altitude

· After you set the reference altitude, the watch adjusts its air pressure to

altitude conversion calculation accordingly.

· To determine the height of a tall building,

set the reference altitude to 0 on the

ground floor. Note, however, that you may

not be able to get a good reading if the

building is pressurized or air-conditioned.

· When mountain climbing, you can set the

reference value in accordance with a

marker along the way or altitude

information from a map. After you do this,

the altitude readings produced by the

watch will be more accurate than they

would without a reference altitude.

· Note that the following conditions will

prevent you from obtaining accurate readings:

When air pressure changes because of changes in the weather

Extreme temperature changes

When the watch itself is subjected to strong impact

Understanding the Altimeter Screen

Press E to enter the Altimeter Mode.

· Altitude is displayed in units of 5 meters (20 feet).

· The measurement range for altitude is 700 to 10,000 meters (2,300 to

32,800 feet).

· The measured altitude may be a negative value in cases where there is a

reference altitude value set or because of certain atmospheric conditions.

· The displayed altitude value changes to xxxx meters (or feet) if a

measured altitude falls outside the measurement range. The altitude value

will be displayed again as soon as the measured altitude is within the

allowable range.

· You can change the unit of measurement for the displayed altitude values

between meters (m) and feet (ft). See "To change the Altitude Units".

About Altitude Measurements

There are two types of altitude measurements: those for displayed data

(Altimeter Mode measurements) and those for memory data (Memory

measurements).

Altimeter Mode measurement

This type of measurement is performed only when the watch is in the

Altimeter Mode. As soon as you enter the Altimeter Mode, measurements are

taken every five seconds for the first three minutes. After that, measurements

are taken every two minutes.

· The ALTI indicator flashes on the display while a measurement is in progress.

400

Remaining memory

1 second later

Altitude graph (current altitude flashing) (unit: 10m/40 ft.)

Altitude

Timekeeping Mode time

Memory measurements

Memory measurements are taken independently of Altimeter Mode

measurements and stored directly into memory (along with the date and time

of the measurement) for later recall. There are two types of memory

measurements: "Auto measurements" and "Manual measurements".

Auto measurements

With Auto measurement, the watch continuously performs measurements

whenever the minutes in the Timekeeping Mode reach 00, 15, 30, or 45, until

you switch Auto measurements off. The watch continues to take

measurements regardless of whether or not you change modes, so you can

keep a running log of altitude changes automatically.

Manual measurements

You can use the manual procedure to take a reading anytime you want to

store your current altitude data into memory for later recall. Manual memory

measurements can be performed only while the watch is in the Altimeter

Mode.

Selecting Auto or Manual Measurement

Use the following procedure to switch between Auto or Manual measurement.

Note that you cannot perform this operation while a preset Auto measurement

is already in progress.

To select Auto or Manual measurement

1. In the Altimeter Mode, hold down A until

the display clears. After four or five

seconds, either OFF or the current

reference altitude value (if set) will start to

flash, which indicates the setting screen.

2. Press D twice to move the flashing to the

memory measurement setting (AUTO or

MANUAL).

· Press D to move the flashing in the sequence shown below.

Reference

Altitude

Alarm

Memory

Measurement

Altitude

Unit

3. While the memory measurement setting is flashing, press B or E to

select AUTO (Auto measurement) or MANUAL (Manual measurement).

4. Press A to exit the setting screen.

· An indicator on the display shows the type of measurement (AUTO or

MANUAL) that you currently have selected.

To use Auto measurement

1. Confirm that the AUTO indicator is shown on the display.

· If it is not, use the procedure under "To select Auto or Manual

measurement" to select Auto measurement.

2. In the Altimeter Mode, hold down E until the watch emits a short beep,

indicating the start of the measurement.

3. To stop measurements at any point in the Altimeter Mode, hold down E

again until the watch emits a short beep.

· The data that is measured when you first start Auto measurement is

also stored into memory.

· The AUTO indicator flashes on the display when you start Auto

measurements. The AUTO indicator continues to flash (indicating that

measurements continue) even if you change modes.

· Auto measurement cuts off automatically whenever there are 49

records stored in memory. The 50th record measurement when you

stop measurement in step 3 above is also stored in memory.

· A final measurement is taken when you turn off Auto measurement,

and that data is also stored into memory. Such data is indicated by

FIN during the recall operation.

To use Manual measurement

1. Confirm that the MANUAL indicator is shown on the display.

· If it is not, use the procedure under "To select Auto or Manual

measurement" to select Manual measurement.

2. In the Altimeter Mode, hold down E until the watch emits a short beep,

indicating that a measurement is taken.

· Repeat step 2 whenever you want to take a reading.

· Button operation becomes impossible during the four or five seconds

that it takes to complete a measurement. Normal operation will return

once the operation is finished.

Setting a Reference Altitude

After you set a reference altitude, the watch adjusts its air-pressure-to-altitude

conversion calculation accordingly. The altitude measurements produced by

this watch are subject to error caused by changes in air pressure. Because of

this, we recommend that you update the reference altitude whenever one is

available during your climb.

2271-4

To set a reference altitude

1. In the Altimeter Mode, hold down A until

the display clears. After four or five

seconds, either OFF or the current

reference altitude value (if set) will start to

flash, which indicates the setting screen.

· OFF indicates no reference altitude.

2. Press E to increase the current reference

altitude value by 5 meters (or 20 feet) or B

to decrease it.

· You can set the reference altitude within the range of 10,000 to 10,000

meters (32,800 to 32,800 feet).

· Pressing E and B at the same returns to OFF, so the watch

performs air pressure to altitude conversions based on preset data

only.

3. Press A to exit the setting screen.

About the Altitude Alarm

The altitude alarm sounds for about five seconds whenever the current

altitude matches a preset value. You can press any button to stop the alarm

after it starts to sound.

Example

If you set the altitude alarm at 130 meters, it sounds when you pass the 130-

meter mark on your way up and on your way back down.

To set the altitude alarm

1. In the Altimeter Mode, hold down A until

the display clears. After four or five

seconds, either OFF or the current

reference altitude value (if set) will start to

flash, which indicates the setting screen.

2. Press D once to move the flashing to the

altitude alarm setting.

· Press D to move the flashing in the

sequence shown below.

Reference

Altitude

Alarm

Memory

Measurement

Altitude

Unit

3. While the altitude alarm setting is flashing, press E to increase the

current altitude alarm value by 5 meters (or 20 feet) or B to decrease it.

· You can set the altitude alarm value within the range of 10,000 to

10,000 meters (32,800 to 32,800 feet).

· Pressing E and B at the same resets the altitude alarm value to O.

4. Press A to exit the setting screen.

To turn the altitude alarm on and off

1. In the Altimeter Mode, hold down A until

the display clears. After four or five

seconds, either OFF or the current

reference altitude value (if set) will start to

flash, which indicates the setting screen.

2. Press D once to move the flashing to the

altitude alarm setting.

3. Press C to switch the altitude alarm on

(ON) and off (OFF).

4. Press A to exit the setting screen.

· If the altitude alarm is on, the altitude

alarm on indicator remains on the

display when you change to another

mode.

Memory Data Management

Each altitude record includes an altitude reading, plus the month, day, hour,

and minutes the measurement was taken. Records are displayed in the order

they were saved.

Memory can hold up 50 records. You can store 50 Auto measurement

records, 50 Manual measurement records, or any mixed combination of Auto

and Manual measurement records. In addition, there are two extra records

that show the highest (max) and lowest (min) altitude values, from among the

displayed data (Altimeter Mode measurements) and memory data (Memory

measurements).

The following example illustrates how data would be arranged in memory after

you perform one Auto measurement (Auto 1), two Manual measurements

(Manual 1, Manual 2), and then one Auto measurement (Auto 2).

Auto 1

Auto 2

MAX

MIN

Manual 2

Manual 1

· Note that the highest (MAX) and lowest (MIN) records always are last.

Altitude alarm on indicator

Current On/Off status

Auto Measurement Records

· Performing an Auto measurement produces a set of records of all the

measurements taken during the Auto measurement session. Since Auto

measurement produces four altitude readings per hour (at 00, 15, 30, and

45 minutes of each hour) leaving Auto measurement turned on for two

hours would result in a set of eight records.

· The following shows how the records that make up an Auto measurement

set appear when you recall them.

· The altitude graph separates the maximum and minimum altitude readings

by nine display dots. Other readings are shown relative to the maximum

and minimum.

· Note that Auto measurement records are always treated as a set. This

means that deleting one record in a set deletes the entire set.

Manual Measurement Records

· Performing a Manual measurement produces a single record. The

illustration below shows how a Manual measurement record appears when

you recall it.

MIN and MAX Records

· The MIN record shows the lowest altitude reading from among those

contained in memory (both Auto and Manual), and the reading displayed in

Altimeter Mode. The

MAX record shows the highest altitude reading.

· When you display the MAX screen, the message MAX alternates every

second with the date in the upper display. The message

MIN alternates

on the

MIN screen.

· The MIN and MAX records are changed automatically whenever a

measurement produces a reading that is greater than the current

MAX

value or less than the current

MIN value.

Note

· 50 records are enough to store 12 hours and 15 minutes of Auto

measurement data (if you do not take any Manual readings during that

time).

Important!

· Further Auto or Manual measurements become impossible whenever

memory is full. The message FULL on the display indicates that memory

is full. Always check the amount of memory remaining before starting

memory measurements, and delete records if necessary.

AUTO indicator

Altitude graph

First record

of the set

All records between the initial

screen and final screen

Final record

of the set

MANUAL indicator

Highest Altitude Attained

Lowest Altitude Attained

Recalling Altitude Measurement Records

Use the Recall Mode to recall altitude measurement records. You can enter

the Recall Mode by pressing the D button.

· Measurement records are stored in memory even if an error occurs during

the measurement. For details on errors, see "Warning Indicators".

To recall altitude measurement records

In the Recall Mode, press E to scroll forward

through the stored records or B to scroll

backward.

· See "Memory Data Management" for

information about how data is stored.

Date

Time

Altitude

2271-5

Deleting an Altitude Measurement Record

Use the Recall Mode to delete altitude measurement records. You can enter

the Recall Mode by pressing D.

Note

· The procedure you should use to delete a record depends on if the record

was produced by Auto measurement or Manual measurement.

· Deleting Auto measurement records deletes the entire set, from the initial

record to the final record.

· You cannot delete a record that is part of an ongoing Auto measurement

operation (indicated when AUTO is flashing on the display). You can,

however, delete records from another, already completed measurement

operation.

To delete a altitude measurement record

1. In the Recall Mode, display the record you

want to delete.

· If you want to delete a set of Auto

measurement records, display the first

record of the set.

2. To clear the data, hold down A until the

watch emits a long beep (and until

CLR

stops flashing on the display).

First record of the set

ALARM

You can set five independent Daily Alarms.

When an alarm is turned on, the alarm tone

sounds when the alarm time is reached. You

can also turn on an Hourly Time Signal that

causes the watch to beep twice every hour on

the hour.

· The alarm number (1 through 5) indicates

an alarm screen.

SIG appears in place of

AL when the Hourly Time Signal screen is

shown.

· All of the operations in this section are

performed in the Alarm Mode, which you

enter by pressing D.

To set an alarm time

1. In the Alarm Mode, use E and B to

select the alarm whose time you want to

set.

2. Hold down A until the hour digits of the alarm time start to flash, which

indicates the setting screen.

· This automatically turns on the alarm.

3. Press D to move the flashing between the hour and minutes.

4. While a setting is flashing, use E (+) and B () to change it.

· When setting the alarm time using the 12-hour format, take care to set

the time correctly as a.m. (no indicator) or p.m. (P indicator).

5. Press A to exit the setting screen.

Alarm Time (Hour : Minutes)

Alarm on indicator

Timekeeping Mode time

Alarm number

AL-1

SIG

AL-2

AL-5

AL-3

AL-4

Press E.

Press B.

Alarm Operation

The alarm sounds at the preset time for about 20 seconds (in all modes), or

until you stop it by pressing any button.

To test the alarm

In the Alarm Mode, hold down C to sound the alarm.

To turn an alarm and the Hourly Time Signal on and off

1. In the Alarm Mode, use E and B to select an alarm or the Hourly Time

Signal.

2. When the alarm or the Hourly Time Signal you want to is selected, press

C to turn it on and off.

Indicates alarm is ON.

Indicates Hourly Time Signal is ON.

· The alarm on indicator (

) and the Hourly Time Signal on indicator

(

) are shown on the display in all modes while these functions are

turned on.

· If any alarm is on, the alarm on indicator is shown on the display in all

modes.

Start

Stop

Re-start

Stop

Clear

Split release

Start

Split

Stop

Clear

Start

Split

First runner

finishes.

Stop

Second runner finishes.

Record time of first

runner.

Split release

Record time of

second runner.

Clear

STOPWATCH

The stopwatch lets you measure elapsed time,

split times, and two finishes.

· The display range of the stopwatch is 23

hours, 59 minutes, 59.99 seconds.

· The stopwatch continues to run, restarting

from zero after it reaches its limit, until you

stop it.

· The stopwatch measurement operation

continues even if you exit the Stopwatch

Mode.

· All of the operations in this section are

performed in the Stopwatch Mode, which

you enter by pressing D.

To measure times with the stopwatch

Elapsed Time

Split Time

Two Finishes

Hours

Minutes

1/100 second

Seconds

BACKLIGHT

The backlight uses an EL (electro-

luminescent) panel that causes the entire

display to glow for easy reading in the dark.

The watch's auto light switch automatically

turns on the backlight when you angle the

watch towards your face.

· The auto light switch must be turned on

(indicated by the auto light switch on

indicator) for it to operate.

· See "Backlight Precautions" for other

important information about using the

backlight.

To turn on the backlight manually

In any mode, press L to illuminate the display for about one second.

· The above operation turns on the backlight regardless of the current auto

light switch setting.

About the Auto Light Switch

Turning on the auto light switch causes the backlight to turn on for about one

second, whenever you position your wrist as described below in any mode.

· Be sure to wear the watch on the outside of your left wrist while using the

auto light switch.

Moving the watch to a position that is parallel to the ground and then tilting

it towards you more than 40 degrees causes the backlight to turn on.

Warning!

· Always make sure you are in a safe place whenever you are reading

the display of the watch using the auto light switch. Be especially

careful when running or engaged in any other activity that can result

in accident or injury. Also take care that sudden illumination by the

auto light switch does not surprise or distract others around you.

· When you are wearing the watch, make sure that its auto light switch

is turned off before riding on a bicycle or operating a motorcycle or

any other motor vehicle. Sudden and unintended operation of the

auto light switch can create a distraction, which can result in a traffic

accident and serious personal injury.

Auto light switch on indicator

Parallel to

ground

More than