1. Introduction
Thank you for choosing the TODO TUD-523 Under Desk Elliptical Machine. This device is designed to provide a low-impact leg workout and promote circulation while seated. Please read this manual thoroughly before using the machine to ensure safe and optimal operation.

Image 1.1: The TODO TUD-523 Under Desk Elliptical Machine.
2. Safety Instructions
- Ensure the machine is placed on a stable, flat surface before use.
- Keep children and pets away from the machine during operation.
- Do not stand on the pedals. This machine is designed for seated use only.
- Consult a physician before starting any new exercise program, especially if you have pre-existing health conditions.
- Stop exercising immediately if you feel pain, dizziness, or discomfort.
- Use only the provided power adapter.
- Do not attempt to disassemble or repair the machine yourself. Contact customer support for assistance.
3. Package Contents
Verify that all components are present in the package:
- TODO TUD-523 Under Desk Elliptical Machine (Main Unit)
- Remote Control
- Power Adapter
- User Manual (this document)
- Small screwdriver and screws (for pedal attachment, if not pre-attached)

Image 3.1: Overview of package contents and machine dimensions.
4. Setup
The TODO TUD-523 Under Desk Elliptical Machine arrives fully assembled, requiring minimal setup before first use. The main unit is ready to go, but the pedals may need to be secured.
4.1 Attaching the Pedals
If the pedals are not pre-attached, follow these steps:
- Identify the right and left pedals. The right pedal typically has a small 'R' marking or is designed to fit the right side of the machine.
- Align the right pedal with the corresponding attachment point on the machine.
- Use the provided screws and screwdriver to securely fasten the pedal. Ensure it is tight to prevent wobbling during use.
- Repeat the process for the left pedal.
Video 4.1: Demonstration of attaching the pedals to the elliptical machine.
4.2 Power Connection
Connect the power adapter to the machine's power input port and then plug it into a standard electrical outlet.

Image 4.2: The compact design allows for easy placement under a desk.
5. Operating Instructions
The TUD-523 offers both remote control and on-device button operation for convenience.
5.1 Power On/Off
- Press the Power Button (Ⓘ) on the machine or remote control to turn the device on or off.
5.2 Remote Control Functions

Image 5.1: Remote control and LCD display for easy operation.
- Power Button: Turns the machine on/off.
- Speed Adjustment: Use the Up (▲) and Down (▼) arrows to adjust between 12 speed levels.
- Mode Selection: Press the MODE button to cycle through 12 pre-set automatic modes or switch to Manual mode.
- Direction Adjustment: Press the DIRECTION button to switch between forward and reverse pedaling motion.
- Function: Press the FUNCTION button to change the display metrics (Time, Speed, Distance, Count, Calories).
5.3 On-Device Buttons
The main unit also features buttons for direct control, mirroring the remote's functionality.
5.4 LCD Display
The bright LCD monitor displays real-time workout data:
- TIME: Duration of your exercise session.
- SPEED: Current pedaling speed.
- DISTANCE: Estimated distance covered.
- COUNT: Total number of pedal rotations.
- CALORIES: Estimated calories burned.
5.5 Forward and Reverse Motion
The machine supports both forward and reverse pedaling to engage different muscle groups and optimize your workout.

Image 5.2: Forward motion boosts circulation, backward motion protects joints.
6. Benefits of Use
The TODO TUD-523 Under Desk Elliptical Machine provides a low-impact exercise solution that can:
- Strengthen leg muscles.
- Boost blood circulation.
- Support joint-friendly rehabilitation.
- Reduce stress on the spine, knees, and ankles.

Image 6.1: Low-impact exercise protects joints and promotes overall well-being.
6.1 Quiet Operation
Engineered with an ultra-quiet magnetic drive system, this elliptical operates below 15dB, ensuring a smooth and noise-free workout experience without disturbing others.

Image 6.2: The machine operates at a whisper-quiet level, less than 15dB.
7. Maintenance
- Cleaning: Wipe the machine with a soft, damp cloth after each use. Avoid abrasive cleaners or solvents.
- Storage: Store the machine in a cool, dry place away from direct sunlight and extreme temperatures.
- Inspection: Periodically check all screws and connections to ensure they are secure.
8. Troubleshooting
If you encounter any issues, please refer to the following common problems and solutions:
| Problem | Possible Cause | Solution |
|---|---|---|
| Machine does not power on. | Power adapter not connected or faulty outlet. | Ensure power adapter is securely plugged into the machine and a working electrical outlet. Try a different outlet. |
| Pedals are wobbly or loose. | Pedals not securely attached. | Tighten the screws holding the pedals in place. Refer to Section 4.1. |
| Unusual noise during operation. | Loose components or obstruction. | Check for any loose parts or foreign objects. Ensure the machine is on a level surface. If noise persists, discontinue use and contact support. |
| Remote control not working. | Dead batteries or obstruction. | Replace remote control batteries. Ensure there is no obstruction between the remote and the machine's sensor. |
If the problem persists after attempting these solutions, please contact TODO customer support.
9. Specifications
| Feature | Detail |
|---|---|
| Model Name | TUD-523 |
| Product Dimensions | 47.5 x 25.91 x 41.91 cm (18.7 x 10.2 x 16.5 inches) |
| Item Weight | 4.6 kg (10.14 lbs) |
| Colour | Black+sliver |
| Material | Acrylonitrile Butadiene Styrene (ABS), Aluminum |
| Resistance Mechanism | Magnetic |
| Speed Levels | 12 |
| Operating Modes | 12 (Automatic and Manual) |
| Maximum Weight Recommendation | 136.08 kg (300 lbs) |
| Included Components | Elliptical trainer, Remote control, Power adapter |
10. Warranty and Support
For warranty information or technical support, please contact TODO customer service. Keep your purchase receipt as proof of purchase.
Manufacturer: TODO
Contact Information: Refer to the product packaging or the official TODO website for the most up-to-date contact details.