Introduction
The DYMO ExecuLabel LM150 is a versatile labelmaker designed for creating professional-looking labels for various organizational needs. This device utilizes thermal transfer technology and D1 tapes to produce durable, high-quality labels quickly and efficiently. Its compact design allows for both desktop and handheld use, making it suitable for a wide range of applications from office organization to personal labeling tasks.
Key features include a 13-character graphic display for easy previewing, fixed length printing, and auto-copying functions. The LM150 supports 5 different text styles (italic, outline, underline) and offers 270 symbols and characters to customize labels.

Figure 1: DYMO ExecuLabel LM150 in retail packaging.
Safety Information
Please read all safety instructions before using the DYMO ExecuLabel LM150. Failure to follow these instructions may result in electric shock, fire, or serious injury.
- Do not expose the device to water or excessive moisture.
- Use only the specified AC adapter provided with the device or a compatible replacement.
- Do not attempt to disassemble or modify the label maker. Refer all servicing to qualified personnel.
- Keep the device away from direct sunlight and heat sources.
- Ensure proper ventilation when operating the device.
- Keep out of reach of children.
Package Contents
Verify that all items are present in the package:
- 1 x DYMO ExecuLabel LM150 Label Maker
- 1 x AC Adapter
- 1 x D1 Label Cassette (typically Black on White, 12mm x 3m)
Setup
1. Powering the Device
The DYMO ExecuLabel LM150 can be powered by either the included AC adapter or 5 AA batteries (not included).
Using the AC Adapter:
Connect the AC adapter cable to the power port on the side of the label maker. Plug the adapter into a standard electrical outlet.

Figure 2: Label maker connected to AC adapter.
Installing Batteries:
- Turn the label maker over.
- Locate the battery compartment cover on the back of the device.
- Press down on the latch and slide the cover off.
- Insert 5 AA alkaline batteries, ensuring correct polarity (+/-) as indicated inside the compartment.
- Replace the battery compartment cover until it clicks into place.

Figure 3: Rear view of the label maker with battery compartment.

Figure 4: Open battery compartment.
2. Installing a Label Cassette
- Open the label cassette compartment cover. This is typically located on the top-right side of the label maker.
- Insert the D1 label cassette with the label side facing down, ensuring the tape and ribbon are properly aligned with the guides.
- Press the cassette firmly into place until it clicks.
- Close the label cassette compartment cover.

Figure 5: Label cassette viewing window.
Operating Instructions
1. Power On/Off
Press the On/Off button located on the top-left of the keypad to turn the label maker on or off.
2. Typing Text
Use the QWERTY keyboard to type your desired text. The text will appear on the 13-character graphic display.
- Press Shift to type uppercase letters or the symbols above the keys.
- Press CAPS to toggle Caps Lock on or off.
- Use the arrow keys (< and >) to move the cursor.
- Press Clear to delete the character at the cursor position. Hold Clear to clear all text.
3. Formatting Labels
The LM150 offers various formatting options:
- Text Styles: Press the AAA button to cycle through text styles such as Normal, Bold, Italic, Outline, and Underline.
- Font Size: Press the AA button to adjust font size (e.g., Small, Medium, Large).
- Borders and Boxes: Use the Box button to add decorative borders or boxes around your label text.
- Symbols: Press the Symbols button to access a library of 270 symbols and special characters. Use the arrow keys to navigate and OK to select.
- Fixed Length: The device supports fixed length printing for consistent label sizes. Refer to the on-screen prompts or manual for specific settings.
4. Printing Labels
Once your label text is entered and formatted:
- Press the Print button.
- The label will feed out of the label exit slot.
- Use the integrated cutter (located on the right side of the device) to cut the label. Press the cutter lever down firmly.

Figure 6: Integrated label cutter.
5. Auto-Copying
The auto-copy feature allows you to print multiple copies of the same label. Consult the on-screen menu or the full manual for detailed instructions on activating and setting the number of copies.
Maintenance
Cleaning the Label Maker
To ensure optimal performance, periodically clean the print head and cutter blade.
- Turn off the label maker and disconnect the AC adapter (if used).
- Open the label cassette compartment.
- Gently wipe the print head with a clean, lint-free cloth. Do not use alcohol or other solvents.
- Carefully remove any adhesive residue from the cutter blade using a cotton swab.
- Close the compartment.
Replacing Label Cassettes
When the label tape runs out or you wish to change tape types:
- Turn off the label maker.
- Open the label cassette compartment.
- Remove the empty or desired cassette by gently pulling it out.
- Insert a new D1 label cassette as described in the "Setup" section.
- Close the compartment.
Troubleshooting
If you encounter issues with your DYMO ExecuLabel LM150, refer to the following common problems and solutions:
| Problem | Possible Cause | Solution |
|---|---|---|
| Device does not turn on. | No power, dead batteries, or faulty AC adapter. | Ensure AC adapter is properly connected or replace batteries. Check battery polarity. |
| Blank label prints or poor print quality. | Incorrectly installed label cassette, empty cassette, or dirty print head. | Reinstall cassette, replace cassette, or clean print head. |
| Tape jams. | Improper cassette installation or tape twisted. | Remove cassette, clear any jammed tape, and reinstall cassette correctly. |
| Cutter not working. | Cutter blade is dull or jammed with adhesive. | Clean the cutter blade. If issue persists, contact support. |
| Display shows error message. | Specific error condition. | Refer to the full user manual for specific error codes or try turning the device off and on again. |
Specifications
| Feature | Detail |
|---|---|
| Model Name | LM150 |
| Item Model Number | 18143 |
| Brand | DYMO |
| Printing Technology | Thermal Transfer |
| Printer Output | Monochrome |
| Maximum Black and White Print Resolution | 300 dpi |
| Compatible Tape Type | DYMO D1 Tapes |
| Maximum Media Size | 14.2 inches (length) |
| Power Source | AC Adapter (included) or 5 x AA Batteries (not included) |
| Product Dimensions | 10.7 x 8.2 x 2.6 inches |
| Item Weight | 1.85 pounds |
| Connectivity Technology | USB (for PC connectivity, if applicable, though description implies standalone use) |
| Display | 13-character graphic display |
| Keyboard Layout | QWERTY |
Warranty and Support
The DYMO ExecuLabel LM150 comes with a limited warranty. For specific warranty terms and conditions, please refer to the documentation included with your purchase or visit the official DYMO website.
For technical support, troubleshooting assistance beyond this manual, or to inquire about replacement parts and accessories, please contact DYMO customer service. You can typically find contact information on the DYMO official website or through the retailer where the product was purchased.
Online Resources:
- Official DYMO Website: www.dymo.com
- Product Support Pages: Search for "DYMO LM150 support" on the official website.