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See other side for how to use printer. 

Software

Label Editor Professional Label Editor Lite

Epson apps

*1

OS

Windows

macOS

iOS, Android

Hard drive space

About 300 MB

About 40 MB

-

Display

1,024 × 768 (XGA) or higher resolution

-

Interface

•  USB 1.1 Full-speed
•  Bluetooth

*2

USB 1.1 Full-speed

Bluetooth

*1: Epson apps for mobile devices such as Epson iLabel.

*2: Bluetooth communication is available with an Windows 8 or later computer.

Installation Manual

Read this document carefully to use this product safely and correctly.
If your product is faulty, please read the included warranty card and contact 
the store you purchased it from. If you require further assistance, contact 
the K-Sun customer support center.
Please also visit us at http://labelworks.epson.com for help and support. You 
can download the latest version of this Installation Manual from the website.

Before using the printer, check that you have all the items below.
Contact your place of purchase if anything is missing or damaged.

Prepare the software necessary to create labels on your computer or mobile device, and to print them from the 
printer.

The following pieces of software are necessary to use the printer from your computer.

•  Printer driver
•  Label editing software
•  User's Guide of the label editing software (as needed)

Windows

Install the software from the Label Editor Professional 
CD-ROM that was supplied with the product. The 
software can also be downloaded from the following 
website. 
Search the software by its name "Label Editor 
Professional".

U

 http://labelworks.epson.com

macOS

•  Printer driver/User's Guide of the label editing software

Download them from the K-Sun website. 
Search the software by its name "Label Editor Lite".

U

 http://labelworks.epson.com

•  Label editing software

Available on the App Store.
Search the software by its name "Label Editor Lite", 
then install it.

Install any one of the following applications.

•  Epson iLabel
•  Epson Datacom

You can access the Fluke Networks LinkWare™ Live cloud software service from Epson Datacom and print the 
information of the acquired project data.

 

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Front

 

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Rear

LW-PX400 (state with rubber guard attached)

Tape cartridge

USB cable

AC adapter (AST1116Z2-1)

Documents

Label Editor Professional CD-ROM

Checking Package Contents

How to Obtain the Printer Driver and Software

Names and Functions of Parts

Cleaning

1. 

Rubber guard

Protects the printer.

2. 

 button

Turns the printer power ON/OFF.

3. 

 lamp

Indicates the printer's error status.

4. 

 lamp

Indicates the printer battery's remaining 
charge (approximate).

5. 

 lamp

Indicates the printer's status.

6. 

Printer cover tab

Pull this tab to open the printer cover.

7. 

Tape outlet

Printed labels come out here.

8. 

Printer cover

Can be opened to insert a tape 
cartridge, or for print head cleaning.

9. 

Bluetooth button

Press this button and the 

 button 

at the same time to enable/disable 
Bluetooth. 

10. 

Power jack

Connects the included AC adapter.

11. 

USB port

Connects the included USB cable.

12. 

Battery cover

Opened when inserting or replacing 
batteries. 

13. 

Security hole

Lets you secure the printer to a desk or 
post with a commercial security cable 
lock or similar device.

For your safety, read the attached documents carefully to use this product 

correctly. After you have read all instructions, keep this manual handy for future 

reference and to make your concerns clear.
Items below indicate safety precautions to protect users, their surroundings and 

their property from possible injury or damage.
Precautionary notations are categorized as follows according to personal injury 

and damage to the equipment if the instructions are ignored or the equipment is 

misused.

DANGER

This symbol indicates information that, if ignored, could possibly result in serious or fatal 

personal injury. Take extra caution in performing procedures with DANGER headings.

WARNING

This symbol indicates information that, if ignored, could possibly result in serious personal 

injury or even death due to incorrect handling.

CAUTION

This symbol indicates information that, if ignored, could possibly result in personal injury, 

physical damage, or damage to equipment due to incorrect handling.

The following describes the meaning of each symbol used in the precautions.

This indicates an 

important reminder.

This indicates a 

prohibited item.

This indicates a 

mandatory procedure.

DANGER

When handling batteries

If liquid leaking from an alkaline battery gets into your eyes, do not rub 

your eyes but immediately wash them well with clean water and contact a 

doctor. Otherwise, it may cause blindness.

WARNING

When using the AC adapter and power cable

The cords included with this product contain chemicals, including 

lead, known to the State of California to cause birth defects or other 

reproductive harm. 

Wash hands after handling.

 (This notice is provided in 

accordance with Proposition 65 in Cal. Health & Safety Code §25249.5 and 

following.)
Do not use any AC adapter or power cable other than the dedicated AC 

adapter and power cable. Do not use the AC adapter with other than the 

specified voltage also. Otherwise, damage, overheating, fire or electric 

shock may occur.
Take the following precautions when handling the AC adapter and power 

cable.

• Make sure to avoid using multi-socket adapters.

• Make sure the plug is not dusty before inserting it into an outlet.

• Insert the plug firmly into the outlet.

• Do not hold the AC adapter or the plug with wet hands.

• Do not pull the power cable when disconnecting the plug. Be sure to 

hold the plug when disconnecting it.

• Do not make any modification to the AC adapter or power cable.

• Do not apply strong shocks to or put a heavy object on the AC adapter or 

power cable.

• Do not bend or twist the AC adapter or power cable forcibly.

• Do not place the AC adapter or power cable near a heater.
Do not use any damaged AC adapter or power cable. Otherwise, damage, 

overheating or smoking may occur, which may result in fire or electric shock.
Do not touch the plug during thunderstorms.

When handling batteries

Keep batteries out of reach of children. They are extremely dangerous if 

swallowed.

When using this product

Do not apply any strong force or shocks to the product such as standing 

on, dropping or hitting it. Otherwise, the product may be broken, which 

may result in fire or electric shock. If it is damaged, turn off the power 

immediately, unplug the AC adapter and remove the batteries, and then 

contact the K-Sun customer support center. Continuous use may result in 

fire or electric shock.
Take care not to spill any beverage such as tea, coffee or juice onto the 

product, or to spray aerosol insecticide. It may cause malfunction, fire, or 

electric shock. If any liquid has been spilled on the product, turn off the 

power, unplug the AC adapter and remove the batteries immediately, and 

then contact the K-Sun customer support center. Continuous use may 

result in fire or electric shock.
Do not touch the printhead because it becomes very hot. Otherwise, there 

is a risk of burns.

Do not open any covers other than the printer cover and the battery cover. 

Doing so may result in fire or electric shock. Always use the product as 

instructed in this manual. Otherwise, damage or injury may occur.
Never modify or disassemble this product. Doing so may cause fire or 

electric shock. Do not carry out any operations not described in this 

manual, or the product may break or cause injury.
If any of the following abnormalities is observed, turn off the power 

immediately, unplug the AC adapter and remove the batteries, and then 

contact the K-Sun customer support center.

• If smoke, strange odours or unexpected noises come from the product

• If liquid or foreign objects get inside the product

• If the product has been dropped or damaged
Do not touch the tape eject slot, during printing or when the auto cutter is 

in operation. Otherwise there is a risk of injury.
May exert electromagnetic interference on, and cause malfunction of, 

cardiac pacemakers. Before using this product, check that there is no one 

in the vicinity using a cardiac pacemaker.
May exert electromagnetic interference on, and cause malfunction of, 

sensitive medical equipment. Before using this product, check that there is 

no sensitive medical equipment in the vicinity.
Use of this product on aircraft may be restricted in some countries. Before 

using this product, check that use of this product is not restricted on the 

aircraft.

When handling the auto cutter

Do not touch the tape outlet slot (where the labels come out) during 

printing or when the auto cutter is in operation. Otherwise, there is a risk 

of injury.

Others

Do not use or store the product, batteries, AC adapter, power cable, or 

tape cartridges in the following places.

• In direct sunlight.

• Where it may become extremely hot such as in a vehicle with the 

windows closed.

• Where it may become extremely hot such as near a heater or the 

temperature becomes very unstable such as near the exhaust duct of an 

air conditioner.

• Where the product may get wet due to a shower or rain such as in a 

bathroom or outdoors.

• In a dusty place or where the product may be exposed to smoke or steam 

such as near the kitchen or a humidifier.

• On an unstable place such as on a shaky table or on an inclined place.

• Where it might be subjected to vibration or shock.

• Near high-voltage power lines or something that generates a magnetic 

field.

Keep the plastic bags used to contain the product or this manual out of 

reach of children. Children may suffocate if they swallow them or put their 

heads into the bags.

CAUTION

When handling batteries

If liquid leaks from a battery, wipe it off with a cloth and replace it with a 

new one. If the liquid comes in contact with your skin, wash it away with 

water immediately.
If the batteries are used incorrectly, they may cause leakage, overheating, 

explosion, erosion, or damage to the product, which may result in fire or 

injury.

• Do not use new ones and old batteries together, or mix different types of 

batteries.

• Use AA alkaline batteries.

• Use batteries in the correct directions.

• Take the batteries out immediately when they have no power remaining.

• Take the batteries out if you do not use the product for a long time.

• Do not heat batteries or throw them in fire or water.

• Do not pinch the batteries with metal tweezers or use any pointed sharp 

metal object such as the tip of a mechanical pen or ball-point pen when 

taking the batteries out.

When disposing of used batteries, make sure to follow the regulations.

When using the AC adapter and power cable

Do not unplug the AC adapter while the product is in operation, otherwise 

printing may not be successful.
Do not use the AC adapter in a small, confined space, or cover it with a 

cloth. Otherwise, the AC adapter may overheat and deteriorate.

When using this product

Do not stand or put anything heavy on the product or place it on an 

unstable place such as on a shaky table or on an incline. Otherwise, the 

product may fall and cause injury.

Safety Instructions

 

„

Printer

Dimensions

Approx. 60 (W) x 137.4 (D) x 151 (H) (mm) 
(including rubber guard)

Weight

Approx. 590 g 
(excluding batteries and tape cartridge but 
including rubber guard)

Supported tape 

width

4 mm, 6 mm, 9 mm, 12 mm, 18 mm, 24 mm

Interface

USB 1.1 Full-speed, Bluetooth

Temperature

Operating

5 to 35 degrees C

Storage

-10 to 55 degrees C

Bluetooth Communication

Method

Bluetooth® 2.1

Output

Bluetooth® Power Class 2

Max. distance

About 10 m*

Frequency band

2.4 GHz band (2.4000 to 2.4835 GHz)

Profile

SPP

*The communication distance may vary depending on the operating environment.

Specifications

 CAUTION

Always turn the printer OFF before cleaning.
Always use dedicated tape cartridge having the   symbol. 
Always perform the tape feed operation after inserting a tape 
cartridge.

 

„

Printer

Wipe the printer with a soft, dry cloth.
Never use solvents or chemicals such as benzine, paint thinner or 
alcohol. Never use a chemical cloth.

 

„

Print head

If streaks or smears appear on printouts, use a cotton swab or 
similar materials to wipe dirt off the print head.

1. 

Pull the tab to open the printer cover.

2. 

Clean the print head.

3. 

Close the printer cover.

 

„

Replacing the tape cartridge

1. 

Pull the tab to open the printer cover.

2. 

Hold the tape cartridge by the tabs, and lift it straight up.

Tabs

3. 

Place a new tape cartridge in the printer.

4. 

Close the printer cover.

To ensure safety, unplug this product before leaving it unused.

Before cleaning, make sure to unplug the AC adapter from the outlet, and 

remove the batteries.
Do not use a moistened cloth or solvents such as alcohol, thinner or 

benzine.
Do not block or insert objects into the included AC adapter socket or the 

tape eject slot.
To comply with RF exposure compliance requirements, a distance of at 

least 22 cm must be maintained at all times between the antenna of this 

product and people in the vicinity.

Others

Be careful of continuous use of which may cause eye fatigue.

When handling tape cartridges

• Make sure to use a dedicated   PX Tape.

• Some types of tape cannot be cut by the cutter. For the details, refer to the 

tape’s manual.

• Do not drop it or disassemble it. Doing so may cause damage.

• Do not pull out the tape forcibly by hand. But make sure to feed the tape. 

Otherwise, the tape cartridge may be broken and unusable.

• Avoid using a tape cartridge without remaining tape. Doing so may cause 

overheating of the printhead, which may result in damage or malfunction.

MEMO

Tape cartridges contain ink ribbons in them. When disposing of tape cartridges, 

make sure to follow the local regulations for disposal.

Frequency Precautions

The frequency band for this product is 2.4 GHz. This frequency range is the 

same frequency bandwidth as industrial, scientific, and medical devices such 

as microwave ovens and mobile unit identification (RF-ID) systems (licensed 

premises radio stations and unlicensed specified low-power radio stations) 

used in factory production lines. Before using this product, check that there 

are no radio stations for mobile unit identification or specified low-power 

radio station premises nearby. In the event that this product should interfere 

electromagnetically with the premises of a radio station used for mobile unit 

recognition, cease use immediately and stop generating the electromagnetic 

field. Contact the K-Sun customer support center if this product interferes 

electromagnetically with a special low-power radio station used for mobile unit 

identification or causes similar problems.

International Travel Precautions

Wireless devices are designed to conform to the channel and frequency limits 

of the country they are intended to be used in. This product is based on the 

specifications of the country of sale. If this product is used outside the country of 

sale, check with the K-Sun customer support center for more information.

Other cautions

• Take care not to cut your fingers when cutting the label with scissors.

• Do not attach a label on human bodies, living things, public facilities ore other 

people’s belongings.

• Be sure to turn the power off after use.

 

„

Software System Requirements

 

„

Power Supply

AC adapter Type

AST1116Z2-1

Manufacturer

Seiko Epson Corp.

Input

AC100-240V, 0.4A, 50-60Hz 
(dedicated adapter, power 
cable only)

Output

DC11V, 1.64A

Total output 

power

18.04 W

Battery

AA alkaline battery x 6

10

12

9

13

11

Bluetooth® and the Bluetooth logo are the trademarks of Bluetooth SIG, Inc.

IOS is a trademark or registered trademark of Cisco in the U.S. and other 

countries and is used under license.

Android and Google Play are trademarks of Google, Inc..

International ENERGY STAR® Compliance Statement

The purpose of the International ENERGY STAR® Program is to promote the 

development and popularization of energy-efficient office equipment.

As an ENERGY STAR® Partner; Seiko Epson Corporation has  

determined that this product meets the ENERGY STAR®  

guidelines for energy efficiency.

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Where to download the software

Mobile Device

Computer

For the latest information about the 
application software and the compatible 
operating systems, visit the K-Sun 
website.

U

 http://labelworks.epson.com

1

LABELWORKS PX

LW-PX400

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