8 Function 151624 - Bike computer Halfords - Free user manual and instructions

Product Type	Bike computer
Brand	Halfords
Model	8 Function 151624
Dimensions	Approximately 5 x 3 x 2 cm
Weight	About 30 g
Power Source	CR2032 lithium battery
Number of Functions	8
Primary Functions	Current speed, average speed, maximum speed, trip distance, odometer, ride time, clock, stopwatch
Display	LCD screen
Mount Type	Handlebar mount
Sensor	Wired wheel sensor
Cable Length	Approximately 70 cm
Water Resistance	Splash proof (IPX4)
Maintenance	Clean with a damp cloth; avoid solvents
Battery Life	Approximately 1 year under normal use
Safety	Ensure mount is secure; do not ride while distracted
Reparability	Battery can be replaced; sensor and bracket available as spare parts

Frequently Asked Questions - 8 Function 151624 Halfords

How do I install the bike computer?

Mount the bracket on the handlebar using the provided zip ties. Attach the wheel sensor to the fork and magnet to a spoke. Route the wire and connect to the head unit. See manual for detailed steps.

How do I reset the trip distance?

Press and hold the MODE button for 3 seconds while on the trip distance screen until the value resets to zero.

Why is the display not turning on?

Check the battery: open the back cover and ensure the CR2032 battery is correctly installed and not depleted. Replace if necessary.

How to switch between kilometers and miles?

The unit is set at factory. To change, check if there is a switch inside the battery compartment or refer to manual. Not all models support this.

What does the '8 functions' include?

Functions include: current speed, average speed, maximum speed, trip distance, odometer, ride time, clock, and stopwatch.

How do I replace the battery?

Open the back cover with a coin or screwdriver, remove old CR2032 battery, insert new one with positive side up, close cover securely.

The speed reading is inaccurate or jumps. What to do?

Ensure the magnet and sensor are aligned properly (1-3 mm gap). Check that the magnet is securely attached to the spoke and passes close to the sensor.

Is the bike computer waterproof?

It is splash proof (IPX4), so it can withstand light rain but not submersion or heavy downpours.

How do I set the clock?

Press and hold SET button for 3 seconds until hours flash. Use MODE to adjust, then press SET to confirm and move to minutes. Repeat.

Can I use it on multiple bikes?

Yes, you can purchase additional mounting kits (bracket, sensor, magnet) for other bikes and swap the head unit.

USER MANUAL 8 Function 151624 Halfords

halfords 4403000000_20090423-1 151624 Halfords 8 Function Computer 151632 Halfords 10 Function Computer
C. BATTERY CHANGE Coin Battery Cap 1.5V battery LR44
b. POPULAR TIRE CIRCUMFERENCE REFERENCE TABLE
Tire Size	Circumference Number	Tire Size	Circumference Number	Tire Size	Circumference Number	Circumference Number	Circumference Number	Circumference Number	Circumference Number	Circumference Number	Circumference Number
18 Inch	1436 mm	ATB 26x1.50	2030 mm	27 Inch (750x32c)	2135 mm
20x1.75i	1564	ATB 26x1.75i	2045	700x356	2164
20 Inch	1596	26inch (650A)	2073	700x38Cii	2174
22 Inch	1759	ATB 26x2 (0.65GB)	2099	27.5 inch	2193
ATB 24x1.75i	1888	700C TUBULARi	2117	28 Inch (700B)	2234
24 Inch	1916	700x20Cii	2092	28.6 inch	2281
24x 13/8i	1942	700x25Cii	2124
ATB 26x1.40i	1995	700x28Ci	2136

8 FUNCTIONS: SPD DST OOO CLK AVG MAX TM SCAN

10 FUNCTIONS: SPD DST ODO CLK AVG MAX TM TTM SCAN SPEED PACER

10 FUNCTIONS: Or B, D, E, OBO, OEN, A

MAIN UNIT SETUP (Fig.1)

INITIATE THE COMPUTER

1. Be sure to press the All Clear (AC) key ④ to clear all stored data and initiate the

computer before using it or when replacing battery. Otherwise the unit may malfunction.

1. The LCD segments will be tested automatically after the All Clear key is pressed

2. Press the "MODE" button Ⓞ to stop the LCD test, then the flickering "KM/h" and

"c2155" will be displayed

• CALIBRATION

1. UNIT SELECTIC

1) Press the "MODE" button ⏻ to select "KM/h" or "M/h"(Mile/h).

2) Hold the "MODE" button Ⓞ till the flickering digit is changed to the digit "2" of the

c2155 to recognize either KM/h or M/h as desired.

1. CIRCUMFERENCE DATA SETTING

2. CIRCUMPERENCE DATA SETTING 1) The default is set at 2155mm. Measure the value for your wheel (Fig. a) or refer to

1). The default is set at 2135min. Measure the value for your wheel, the quick table provided in the manual for your bicycle. (Fig. b)

2) A quick press of the "MODE" button Ⓞ advances the flickering digit by 1.

3) To change the flickering digit, hold down the "MODE" button, it till the flickering digit

6). To change the monitoring digit, hold down the MODE button ▼ on the monitoring digit moves to the next digit.

4). When set up is complete, hold down the "mode" button for 6 seconds until main

screen appears (fig 2).

The current speed is always displayed on the 4 digits set when riding.

DST: Trip Distance: 0.00–999.99Km (Miles) 0.01Km (Mile) +/- 0.01%

The DST function accumulates the distance data from the last RESET operation as long

as the bicycle is being ridden.

: 12HR Clock 1H00M00S-12H59M59S 1 Second +/- 0.05%

It displays the current time in 12HR clock.

The TM totals the riding time from the last RESET operation.

AVG: Average Speed: 0.0, 100.0 KM/h (120.0 M/h), 0.1 KM/h (M/h) +/- 0.1%

AVG: Average Speed: 0.0-155.3Km/h (120.0 M/h), 0.1Km/h (M/h), +/- 0.1%

1. It is calculated from the DOT divided by the TM, the average data counted is from the last RESET to current points.

2. It displays an "Err" symbol when either the TM is over 100 hours or the DST is over

1.000 km (or miles). Reset the unit in order to restart.

MAX: Maximum Speed] 0.0–199.9KM/h (120.0 M/h) 0.1KM/h (M/h) +/- 1%

MAX: maximum speed, 0.6–155.5MHz (120.0 MHz), 0.1kHz (MHz), 4–7%

It shows the highest speed from the last RESET operation.

TTM: Total Riding Time: 0H00M-1999H39M, 7 minute, +/- 0.05% The TTM totals the riding time from the last ALL CLEAR operation

The TTM totals the riding time from the last ALL CLEAR operation.

ODO: Odometer 0.0–19999.9Km (Miles), 0.1Km (Mile), +/- 0.1% The ODO accumulates the total distance as long as the hike is moving. The ODO data can be

The ODO accumulates the total distance as long as the bike is moving. The ODO data can be displayed by ALL CLEAR operation only.

cleared by A SPAN - SCAN

1. Auto Serv

2. Auto-Scanning Display Mode Press the MODE button 📄 till th

Press the MODE button ⚫ all the 📄 symbol is displayed. The computer will change the DST 🖼 TM AVG MAY TTM and ODO display modes in a loop sequence automatically.

BUT, , HM, XVO, MRX, TH and OBO display modes in a loop sequence automatically every 6 seconds.

1. Fixed Diagn

2. Fixed Display Mode Press the MODE button

The computer will stop the auto-scanning display operation and the display mode is set

this computer will stop the date scanning display operation and the display mode to set.

It flashes the "▲" speed nacer arrow while the current speed is higher than the average speed

It hashes the speed packet arrow while the current speed is higher than the average speed and the down arrow "●" flickers conversely.

and the down arrow - stickers conversely.

BUTTON AND OPERATIONS

BOTTOM AND OLEKAI AUTOMATIC START/STOP

AUTOMATIC START/STOP

1. The computer will automatically begin counting (i**), ODO, DST, MAX, TTM, TM and AVG

data upon riding and stop counting data when riding is stopped.

1. The flickering symbol “(●●)” indicates that the computer is at START status.

POWER AUTO ON/OFF

POWER AUTO ON/OFF To preserve battery, this computer will automatically switch off when it has not been used for about

To preserve battery, this computer will automatically switch on when it has not been used for about 10 minutes. The power will be turned on automatically by riding the bicycle or by pressing the button.

To minutes. The power will be turned on automatically by having the bicycle or by pressing the button. MODE BUTTON 2

Quickly press this button to move in a loop sequence from one basic function screen to another

dectomy process the button to move in a loop sequence from one basic function screen to double (Fig. 2)

ALL CLEAR OPERATION (Initiate the Computer)

Press the ALL CLEAR (AC) ④ key to initiate the computer or use ALL CLEAR if any irregular

Press the AEE OELAR (AS) © key to initiate the computer of use AEE OELAR if any irregular data appears. It will clear all stored data.

RESET OPERATION

1. Hold down the "MODE" button ② till the LCD digit is blank, then release it. The computer

will RESET the DST, TM, AVG, MAX.

1. It cannot reset √ TTM and ODO data

RECALIBRATION (Fig. 3)

1. Change the LCD display to ODO screen, hold down the "MODE" button ② till (about 6

seconds) it jumps into the calibrating screen.

1. Refer to the main unit setup process to adjust the circumference.

2. Hold down the "MODE" button Ⓤ till (about 6 seconds) it jumps out the recalibration mode to store the desired data and complete recalibration.

store the desired data and complete recalibration.

12HR CLOCK SETTING (Fig. 4)

1. Change the LCD display to screen.

2. Press the IMAGE button will about 5

3. Press the MODE button 📋 till (about 6 seconds) it jumps into the clock adjusting screen to set the clock

4. A quick press of the "MODE" button ① advances the flickering digit by 1

5. A quick press of the "MODE" button advances the flickering digit by 1.

6. To change the flickering digit, hold down the "MODE" button till the flickering digit moves

If to change the marching digit, here can't be more often or on the marching digit moved to the next digit.

1. Hold down the "MODE" button Ⓞ till (about 6 seconds) it jumps out the setting to store the

desired data and complete clock setting.

BATTERY CHANGE (Fig. c)

1. When the brightness of the LCD display is dim, it means that the battery is nearly exhausted

2. Replace a new LR44 (Cross reference type A76, AG13 or V13GA) battery in

the compartment on the back of the computer with the positive (*) pole toward the battery

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• TROUBLE SHOOTING

Check the following before taking unit for repair

PROBLEM	CHECK ITEMS	SOLUTION
No display	1. Is the battery dead?2. Is there incorrect battery installation?	1. Replace the battery.2. Be sure that the positive pole of the battery is facing the battery cap.
No current Speed or incorrect data	1. Is the actual recalibrating or 12HR clock setting screen?2. Are the contacts between the main and the bracket poor?3. Are the relative positions and gap of sensor and magnet correct?4. Is the wire broken?5. Is the circumference correct?	1. Replace the battery setup and complete the adjustment.2. Wrap ice contacts clean.3. Reduce the load (Fig. B4) and readjust data correctly.4. Repair or replace wire.5. Refer to CUBRATIATION* and enter correct value.
Irregular display	Refer to “The MAIN UNIT SETUP” and display on data.
LCD is black	Did you leave main unit under direct sunlight when not riding be able for a long time?	Place main unit in the shade to return to normal state.No change in power on data.
Display is slow	Is the temperature below 0°C (32°F/):	Unit will return to normal state when the temperature rises.

- PRECAUTIONS

1. This computer can

2. Don't leave the main unit exposed to direct sunlight when not riding the bike

3. Don't disassemble the main unit or it's accessories.

4. Check relative position and gap of sensor and magnet periodically

5. Clean the contacts of the bracket and the bottom of the main unit periodically

6. Don't use thinner, alcohol or benzine to clean the main unit or its accessories when they

become dirty

1. Remember to pay attention to the road while riding.