1. Introduction
This manual provides detailed instructions for the proper use and maintenance of your TFA 38.2028.02 Digital Timer and Stopwatch. This device is designed for precise timekeeping in various applications, featuring a reversible display, touch-sensitive buttons, and magnetic mounting options. Please read this manual thoroughly before operating the device.
2. Product Features
- Reversible Display: Allows for easy viewing from different angles.
- Touch-Sensitive Buttons: For intuitive operation.
- Backlight: Provides clear visibility in low-light conditions.
- Magnetic Mounting: Securely attaches to metallic surfaces.
- Wall or Tabletop Mounting: Versatile placement options.
- Timer Range: Counts up to 99 minutes and 59 seconds.
- Compact Design: Dimensions of 76 x 25 x 76 mm.
3. Package Contents
- TFA 38.2028.02 Digital Timer and Stopwatch Unit
- User Manual (this document)
Note: 2 x 1.5V AAA batteries are required and not included in the package.
4. Setup
4.1 Battery Installation
- Locate the battery compartment cover on the back of the unit.
- Gently slide or lift the cover to open the compartment.
- Insert two (2) 1.5V AAA batteries, ensuring correct polarity (+/-) as indicated inside the compartment.
- Replace the battery compartment cover, ensuring it clicks securely into place.

Image: Rear view of the timer with the battery compartment open, illustrating where to insert the two AAA batteries.
4.2 Initial Power On
Once batteries are installed, the display will illuminate, and the device will be ready for use. The default display shows "00:00".
5. Operating Instructions

Image: Front view of the TFA 38.2028.02 timer, highlighting the digital display and the three touch-sensitive buttons: 'M' for minutes, 'S' for seconds, and 'S/S' for Start/Stop.
5.1 Button Functions
- M (Minutes): Press to increase minutes. Hold to rapidly increase minutes.
- S (Seconds): Press to increase seconds. Hold to rapidly increase seconds.
- S/S (Start/Stop): Press to start or stop the timer/stopwatch.
5.2 Setting the Timer (Countdown)
- Ensure the display shows "00:00". If not, press M and S simultaneously to reset.
- Press the M button to set the desired minutes (up to 99 minutes).
- Press the S button to set the desired seconds (up to 59 seconds).
- Once the desired time is set, press the S/S button to start the countdown.
- To pause the countdown, press S/S again. Press S/S to resume.
- When the timer reaches "00:00", an alarm will sound. Press any button to stop the alarm.
5.3 Using the Stopwatch (Count-up)
- Ensure the display shows "00:00". If not, press M and S simultaneously to reset.
- Press the S/S button to start the count-up. The display will begin counting from "00:00".
- To pause the stopwatch, press S/S again. Press S/S to resume.
- To reset the stopwatch to "00:00", pause the stopwatch, then press M and S simultaneously.
5.4 Backlight Function
The display features a backlight for improved visibility. The backlight activates automatically when buttons are pressed and typically remains on for approximately 30-40 seconds before dimming to conserve battery life.
6. Mounting Options
The TFA 38.2028.02 timer offers flexible mounting solutions:
- Magnetic Attachment: The back of the timer is equipped with magnets, allowing it to be securely attached to refrigerators, oven hoods, or any other metallic surface.
- Tabletop Placement: The timer's design allows it to stand upright on a flat surface, such as a kitchen counter or desk.
- Wall Mounting: The unit can also be mounted on a wall using a small hook or screw (not included) through the designated hole on the back.

Image: Rear view of the timer, showing the integrated magnets for secure attachment to metallic surfaces and the model number.
7. Maintenance
7.1 Cleaning
To clean the timer, wipe it with a soft, damp cloth. Do not use abrasive cleaners or immerse the device in water. Avoid getting moisture into the battery compartment or display area.
7.2 Battery Replacement
When the display becomes dim or the device stops responding, it is time to replace the batteries. Follow the battery installation steps in Section 4.1. Always use fresh 1.5V AAA batteries and dispose of old batteries responsibly.
8. Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Device does not power on. | Batteries are dead or incorrectly installed. | Check battery polarity or replace with new AAA batteries. |
| Display is dim or flickering. | Low battery power. | Replace batteries. |
| Buttons are unresponsive. | Low battery power or temporary software glitch. | Replace batteries. If problem persists, remove batteries for 1 minute and reinsert. |
| Timer alarm is too quiet. | Alarm volume is fixed and cannot be adjusted. | Ensure the timer is placed in a location where the alarm can be heard. |
9. Specifications
| Feature | Detail |
|---|---|
| Model Number | 38.2028.02 |
| Brand | TFA |
| Dimensions (L x W x H) | 76 x 25 x 76 mm (approximately 2.5P x 7.6l x 7.6H cm) |
| Weight | 92 grams |
| Material | Plastic with integrated magnets |
| Power Supply | 2 x 1.5V AAA batteries (not included) |
| Timer Range | Up to 99 minutes, 59 seconds |
| Display | Digital with backlight |
| Mounting Options | Magnetic, Tabletop, Wall-mountable |

Image: The timer held in a hand, visually demonstrating its compact size and indicating its dimensions (7.6 cm x 7.6 cm x 2.5 cm).
10. Warranty and Support
TFA products are manufactured with quality and precision. For specific warranty information, please refer to the documentation provided with your purchase or visit the official TFA website. For technical support or inquiries, please contact TFA customer service through their official channels.
Keep this manual for future reference.





