King-Meter K5248 LCD User manual

KING-METER TECHNOLOGY CO., LTD
No.15, Chenchang Road, Beichen Dist.Tianjin,300134, CN
Fax：[phone] Tel: [phone]
USERS GUIDE
K5248 LCD

KING-METER TECHNOLOGY CO., LTD
No.15, Chenchang Road, Beichen Dist.Tianjin,300134, CN
Fax：[phone] Tel: [phone]
CONTENT
Preface ··················································································································································· - 3 -
1. Appearance and Dimensions··············································································································· - 4 -
1.1 Material and Color ·························································································································- 4 -
2. Function and Button Definition ··········································································································· - 4 -
2.1 Function description ······················································································································- 4 -
2.2 Normal Display Content ·················································································································- 5 -
2.3 Button definition····························································································································- 5 -
3. Note for Users····································································································································· - 5 -
4. Installation Instruction ························································································································ - 6 -
5. Normal Operation······························································································································· - 6 -
5.1 On / Off··········································································································································- 6 -
5.2 User interface ································································································································- 6 -
5.3 Color Theme Switch ·······················································································································- 7 -
5.4 Walk Assist Mode···························································································································- 7 -
5.5 PAS Level Selection ························································································································- 7 -
5.6 Battery Indicator····························································································································- 8 -
5.7 Headlight On/Off ···························································································································- 8 -
5.8 Error Code······································································································································- 8 -
6. User Settings······································································································································· - 8 -
6.1 Backlight Brightness Setting ···········································································································- 9 -
6.2 Display Unit Setting (Metric / Imperial) ··························································································- 9 -
6.3 Speed Limit Setting ························································································································- 9 -
6.4 Wheel Size Setting ·······················································································································- 10 -
6.5 Version Information Interface ······································································································- 10 -
7. FAQ··················································································································································· - 11 -
8. Quality Assurance and Warranty Scope····························································································· - 11 -
9. Version·············································································································································· - 11 -
Appendix 1：Error Code Definition ···································································································· - 12 -

KING-METER TECHNOLOGY CO., LTD
No.15, Chenchang Road, Beichen Dist.Tianjin,300134, CN
Fax：[phone] Tel: [phone]
- 3 -
Preface
Dear user, to ensure better performance of your e-bike, please read through the K5248 product
introduction carefully before using. We will use the most concise words to inform you of all the details
(including the hardware installation, setting and normal operation use of the display) when using our
display. Meanwhile, the introduction will also help you to solve possible confusion and barriers.

KING-METER TECHNOLOGY CO., LTD
No.15, Chenchang Road, Beichen Dist.Tianjin,300134, CN
Fax：[phone] Tel: [phone]
- 4 -
1. Appearance and Dimensions
1.1 Material and Color
K5242 products are made of PC material. Under the temperature of -20 to 60℃, the shell material can
ensure normal usage and good mechanical performance.
Dimension（unit：mm）
2. Function and Button Definition
2.1 Function description
K5248 provides you with a variety of function modes, to meet your riding needs.
Its functions are as follows:
◆Battery power indication
◆Speed indication (including Max Speed and Average Speed)
◆Distance (including single trip distance and ODO display)
◆Walk assist & Headlight indication
◆Error code indication
◆Various setting parameters
◆Color Theme switch

KING-METER TECHNOLOGY CO., LTD
No.15, Chenchang Road, Beichen Dist.Tianjin,300134, CN
Fax：[phone] Tel: [phone]
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2.2 Normal Display Content
K5248 Normal Display Interface
2.3 Button definition
There are 3 buttons on K5248, in the following introduction, is named as “MODE”. is
named as “UP” and is named as “DOWN”.
3. Note for Users
Be care of the safety use. Don’t attempt to release the connector when battery is on power.
Try to avoid hitting.
Don’t split the waterproof sticker to avoid affecting the waterproof performance.
Don’t modify system parameters to avoid parameters disorder.
Make the display repaired when error code appears.

KING-METER TECHNOLOGY CO., LTD
No.15, Chenchang Road, Beichen Dist.Tianjin,300134, CN
Fax：[phone] Tel: [phone]
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4. Installation Instruction
When the e-bike is powered off, you can insert the connector of display and the corresponding
connector of controller to complete the installation, and adjust the display to a suitable angle.
5. Normal Operation
5.1 On / Off
Long press “MODE”button then the display will work normally, and the controller will power on at the
same time.
With the display on, long press “MODE” button, the display will shut down, the display will leave off
battery, the leakage current of display on is less than 1μA.
If the e-bike is not used for more than 10 minutes, the display will automatically shut down.
5.2 User interface
Normal display interface
After the display is turned on, it will display the real-time speed by default. The PAS level is
displayed in the lower right corner of the screen, the Single Trip distance (unit: km) and the Odometer
(unit: km) are displayed in the middle position, and the percentage of battery power is displayed at the
top.

KING-METER TECHNOLOGY CO., LTD
No.15, Chenchang Road, Beichen Dist.Tianjin,300134, CN
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5.3 Color Theme Switch
Long press the “UP”, “DOWN” and “MODE” button together for more than 2 seconds to switch color
themes. There are a total of four color themes to meet different customer’s preferences.
Color theme switch
5.4 Walk Assist Mode
Press and hold the “DOWN”button for 2 seconds to enter the Walk assist mode. The E-bike will travel
at a constant speed of 6km/h.
Walk assist mode interface
Walk Assist function can only be used as pushing the e-bike by hands. Please don’t use this
function when riding.
5.5 PAS Level Selection
Short press the "UP" or “DOWN” button to switch the PAS level, the motor output power will be
changed accordingly by the PAS level of E-bike. The default range of PAS level is 0-3 levels. Level 1 is
the lowest output level, and the level 3 is the highest output power level of the motor. The default
level is level1.

KING-METER TECHNOLOGY CO., LTD
No.15, Chenchang Road, Beichen Dist.Tianjin,300134, CN
Fax：[phone] Tel: [phone]
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5.6 Battery Indicator
The battery power is shown as a percentage bar. When the battery is fully charged, the power bar
shows 100%
Battery indicator
5.7 Headlight On/Off
Long press the “UP”button, the backlight will be turned on, and the controller will be informed to turn
on the headlight. Long press the “UP”button for 2 seconds again to turn off the headlight.
Headlight indicator
5.8 Error Code
When the e-bike electronic control system fails, the display will automatically indicate the error code.
For the definition of detailed error codes, see appendix 1.
6. User Settings
When there is no speed in the power on state, press and hold the “UP” and “DOWN” button at the
same time for 2 seconds, and the display will enter the setting interface. Press “MODE” button to select
display settings. Long press “MODE” button to save and exit the setting interface.

KING-METER TECHNOLOGY CO., LTD
No.15, Chenchang Road, Beichen Dist.Tianjin,300134, CN
Fax：[phone] Tel: [phone]
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6.1 Backlight Brightness Setting
Press “UP” and “DOWN” button to change the backlight brightness, short press “MODE”button to
switch to next setting option.
Backlight setting interface
6.2 Display Unit Setting (Metric / Imperial)
The setting parameters are Metric and Imperial. Km/h or Mile/h can be selected by pressing “UP”and
“DOWN” button. Km/h means the unit is metric system, and Mile/h means the unit is Imperial
system. The default unit is metric. Short press “MODE”button to switch to next setting option
Unit setting interface
6.3 Speed Limit Setting
The setting range of the maximum speed setting is 12km / h to 40km / h. It can be set by pressing
“UP”and “DOWN” button. Short press “MODE”button to confirm and switch to next setting option.

KING-METER TECHNOLOGY CO., LTD
No.15, Chenchang Road, Beichen Dist.Tianjin,300134, CN
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Speed limit setting interface
6.4 Wheel Size Setting
The settable values are: 16, 18, 20, 22, 24, 26, 700C, and 28 inch. Select the corresponding wheel
diameter of the E-bike through “UP” and “DOWN” button to ensure the accuracy of the speed display
and mileage display. Short press “MODE”button to confirm and switch to next setting option.
Wheel size setting interface
6.5 Version Information Interface
This interface shows software version number, which is usable for later display maintenance.

KING-METER TECHNOLOGY CO., LTD
No.15, Chenchang Road, Beichen Dist.Tianjin,300134, CN
Fax：[phone] Tel: [phone]
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Version information interface
7. FAQ
Q: Why can’t turn on the display?
A: Please check whether the battery is turned on or the leakage lead wire is broken
Q: How to deal with the error code display?
A: Contact the e-bike maintenance station in time.
8. Quality Assurance and Warranty Scope
I, Warranty Information:
1, King-Meter will be responsible for all faults arising during normal operation that are caused by a
quality defect.
2, The warranty time is 24 months from the day the display leaves the factory.
II, The following are not covered by warranty:
1, Shell opened.
2, Connector damaged.
3, After display out of factory, the shell is scratched or damaged.
4, Lead wire of display scratch or break.
5, The fault or damage is causedby the force majeure (such as fire, earthquake, etc.) or natural disasters
(such as lighting, flooding, etc.)
6, Product exceeded warranty period.
9. Version
The instruction manual of this display is the operation manual of the general software version
(version 1.0) of Tianjin King-Meter Technology Co., Ltd. The version of the display software used on
some vehicles may be slightly different from this manual, and the actual version used shall prevail.

KING-METER TECHNOLOGY CO., LTD
No.15, Chenchang Road, Beichen Dist.Tianjin,300134, CN
Fax：[phone] Tel: [phone]
- 12 -
Appendix 1：Error Code Definition
Error Code
Definition
21
Current Abnormal
22
Throttle Abnormal
23
Motor phase problem
24
Motor Hall defect
25
Brake Failed
30
Communication Abnormal

KING-METER TECHNOLOGY CO., LTD
No.15, Chenchang Road, Beichen Dist.Tianjin,300134, CN
Fax：[phone] Tel: [phone]
- 13 -
KING-METER