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When mounting the bracket on a handlebar, adjust the angle of the bracket so that the back of the computer faces the speed sensor when the computer is attached.
Cutting band after mounting
Cut the bracket band so that cut end will not cause injury.
Mount the speed sensor in a position where the distance from the computer to the speed sensor is within the signal range.
The magnet passes through the speed sensor zone.
The clearance between the speed sensor and the magnet is within 5 mm (3/16").
* The magnet may be mounted at any position on spoke as long as attachment conditions are satisfied.
After attaching the computer, rotate the front wheel gently to check that current speed is displayed on the computer. If the speed is not displayed, refer to the attachment conditions in steps 1, 2, and 4 again.
When using the computer for the first time, configure the initial settings.
Press the AC button on the back of the computer.
* All data is deleted and the computer is reset to its factory default settings.
Select "km/h" or "mph".
Enter the tire circumference of the front wheel in mm.
* Refer to "Tire circumference".
Each time MODE is pressed and held, settings switch from time display mode, to hours, to minutes.
Setup is completed and the computer switches to the measurement screen. For instructions on how to start measurement, refer to "Starting measurement".
Tire circumference can be determined by either of the following two methods:
ETRTO | Tire size | L (mm) |
47-203 | 12x1.75 | 935 |
54-203 | 12x1.95 | 940 |
40-254 | 14x1.50 | 1020 |
47-254 | 14x1.75 | 1055 |
40-305 | 16x1.50 | 1185 |
47-305 | 16x1.75 | 1195 |
54-305 | 16x2.00 | 1245 |
28-349 | 16x1-1/8 | 1290 |
37-349 | 16x1-3/8 | 1300 |
32-369 | 17x1-1/4 (369) | 1340 |
40-355 | 18x1.50 | 1340 |
47-355 | 18x1.75 | 1350 |
32-406 | 20x1.25 | 1450 |
35-406 | 20x1.35 | 1460 |
40-406 | 20x1.50 | 1490 |
47-406 | 20x1.75 | 1515 |
50-406 | 20x1.95 | 1565 |
28-451 | 20x1-1/8 | 1545 |
37-451 | 20x1-3/8 | 1615 |
37-501 | 22x1-3/8 | 1770 |
40-501 | 22x1-1/2 | 1785 |
47-507 | 24x1.75 | 1890 |
50-507 | 24x2.00 | 1925 |
54-507 | 24x2.125 | 1965 |
25-520 | 24x1(520) | 1753 |
24x3/4 Tubular | 1785 | |
28-540 | 24x1-1/8 | 1795 |
32-540 | 24x1-1/4 | 1905 |
25-559 | 26x1(559) | 1913 |
32-559 | 26x1.25 | 1950 |
37-559 | 26x1.40 | 2005 |
40-559 | 26x1.50 | 2010 |
47-559 | 26x1.75 | 2023 |
50-559 | 26x1.95 | 2050 |
54-559 | 26x2.10 | 2068 |
57-559 | 26x2.125 | 2070 |
58-559 | 26x2.35 | 2083 |
75-559 | 26x3.00 | 2170 |
28-590 | 26x1-1/8 | 1970 |
37-590 | 26x1-3/8 | 2068 |
37-584 | 26x1-1/2 | 2100 |
650C Tubular 26x7/8 | 1920 | |
20-571 | 650x20C | 1938 |
23-571 | 650x23C | 1944 |
25-571 | 650x25C 26x1(571) | 1952 |
40-590 | 650x38A | 2125 |
40-584 | 650x38B | 2105 |
25-630 | 27x1(630) | 2145 |
28-630 | 27x1-1/8 | 2155 |
32-630 | 27x1-1/4 | 2161 |
37-630 | 27x1-3/8 | 2169 |
40-584 | 27.5x1.50 | 2079 |
50-584 | 27.5x1.95 | 2090 |
54-584 | 27.5x2.1 | 2148 |
57-584 | 27.5x2.25 | 2182 |
18-622 | 700x18C | 2070 |
19-622 | 700x19C | 2080 |
20-622 | 700x20C | 2086 |
23-622 | 700x23C | 2096 |
25-622 | 700x25C | 2105 |
28-622 | 700x28C | 2136 |
30-622 | 700x30C | 2146 |
32-622 | 700x32C | 2155 |
700C Tubular | 2130 | |
35-622 | 700x35C | 2168 |
38-622 | 700x38C | 2180 |
40-622 | 700x40C | 2200 |
42-622 | 700x42C | 2224 |
44-622 | 700x44C | 2235 |
45-622 | 700x45C | 2242 |
47-622 | 700x47C | 2268 |
54-622 | 29x2.1 | 2288 |
56-622 | 29x2.2 | 2298 |
60-622 | 29x2.3 | 2326 |
MODE operation when mounted on bracket
When the computer is mounted on the bracket, pressing the dot section on the computer depresses the MODE button.
Pressing MODE switches the current function displayed at the bottom of the screen.
* Av displays.E instead of the measurement value when Tm exceeds approximately 100 hours or Dst exceeds 9999.99 km. Reset the computer.
On the measurement screen, press MENU to go to the menu screen. Various settings can be changed on the menu screen.
Measurement starts automatically when the bicycle moves. During measurement the measurement unit (km/h or mph) flashes.
Pressing MODE for 2 seconds when on the measurement screen resets all measurement data to 0 (excluding Odo).
If the computer does not receive any signal for 10 minutes, the power-saving screen is activated and only the clock is displayed.
If MODE is pressed or a sensor signal is received while the powersaving screen is activated, the computer returns to the measurement screen.
* When the computer is left on the power-saving screen for 1 hour, the display only shows the measurement unit. When the computer is in this state, you can return to the measurement screen by pressing MODE.
You can display a stopwatch that lets you count time regardless of whether measurement is started or stopped.
To use the stopwatch, set the stopwatch setting on the menu screen to ON.
For instructions on how to set the stopwatch, refer to "Stopwatch".
Stopwatch operation
Start/stop | Press MODE for 1 second when the stopwatch is displayed. During counting the ![]() |
Reset | Press MODE for 4 seconds when the stopwatch is displayed. |
* Start, stop, and reset operations of the stopwatch are performed separately to measurement, and do not affect other measurements.
* The stopwatch continues counting regardless of the power-saving state. During counting the icon flashes on every screen except for the menu screen.
On the measurement screen, press MENU to go to the menu screen. Various settings can be changed on the menu screen.
* After changing settings, always press MENU to confirm changes.
* When the menu screen is left on for 1 minute, the computer returns to the measurement screen.
Manual distance input
Lets you set total distance traveled manually. (Fractions cannot be entered.)
* Setting an arbitrary value for total distance allows you to start from the value you entered. This is useful when you have just purchased a new bicycle or when replacing the computer battery.
The speed sensor is designed with a maximum signal range of 70 cm (27"), to reduce the chance of interference. (The signal range is intended to serve as a rough guide only.)
When handling the wireless sensor, note the following:
Interference may occur, resulting in malfunction, if the computer is:
Frequency Band: 19 kHz
Radiated Power: −31.7 dBm
Hereby, CATEYE Co., Ltd. declares that the radio equipment type CC-PA100W is in compliance with Directive 2014/53/EU.
The full text of the EU declaration of conformity is available at the following internet address: cateye.com/doc
If the computer or accessories become dirty, clean with a soft cloth which is moistened with mild soap.
Replace the computer battery as described in "Replacing the battery".
Clear all according to the procedure described in "Setting up the computer".
Batteries used Battery life | Computer | Lithium battery (CR2032) x1 / Approx. 1 year (If used for 1 hour a day; actual battery life will vary depending on usage conditions.) |
Speed sensor | Lithium battery (CR2032) x1 / Total distance approx. 10000 km [6,250 miles] | |
* Average value when used at temperature of 20°C with computer and sensor mounted 65 cm apart. * Life of pre-installed battery may be shorter than indicated above. | ||
Controller | 4 bit, 1-chip microcomputer (Crystal controlled oscillator) | |
Display | Liquid crystal | |
Sensor | Non-contact magnetic sensor | |
Signal range | 20 to 70 cm (8" to 27") | |
Tire circumference range | 0100 mm – 3999 mm (Initial value: 2096 mm) | |
Operating temperature range | 32°F – 104°F (0°C – 40°C) (Guaranteed operating temperature range: Display visibility may deteriorate outside this range.) | |
Dimensions/ weight | Computer | 2-21/32" x 1-11/16" x 9/16" (67.5 x 43 x 14.5 mm) / 1.1 oz (31.5 g) |
Speed sensor | 1-5/8" x 1-13/32" x 19/32" (41.5 x 36 x 15 mm) / 0.5 oz (15 g) |
* Specifications and design are subject to change without notice.
2-Years Computer/Speed Sensor Only
(Accessories and Battery Consumption Excluded)
CatEye cycle computers are warranted to be free of defects from materials and workmanship for a period of two years from original purchase. If the product fails to work due to normal use, CatEye will repair or replace the defect at no charge. Service must be performed by CatEye or an authorized retailer.
CAT EYE CO., LTD.
2-8-25, KUWAZU, HIGASHI SUMIYOSHI-KU, OSAKA, JAPAN 546-0041
For inquiries, please visit https://cateye.com/intl/contact/
[For US Customers]
CATEYE AMERICA, INC.
Please visit https://www.cateyeamerica.com/contact-us/
Toll Free: 800.5.CATEYE
Here you can download full pdf version of manual, it may contain additional safety instructions, warranty information, FCC rules, etc.
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