1. Introduction
Thank you for choosing the Karlsson LED Mirror Alarm Clock. This digital alarm clock features a modern design with a clear LED display integrated into a silver mirror surface, showing time and temperature. This manual provides essential information for the safe and efficient use of your device.
What's in the Box:
- Karlsson LED Mirror Alarm Clock
- USB Power Cable

Figure 1: Front view of the Karlsson LED Mirror Alarm Clock, showing the time (15:08) and temperature (19°C) on its reflective display.
2. Safety Information
- Do not expose the device to water or excessive moisture.
- Avoid extreme temperatures, direct sunlight, or dusty environments.
- Keep out of reach of children.
- Use only the provided USB cable or a compatible power adapter.
- When inserting batteries, ensure correct polarity (+/-).
- Do not mix old and new batteries, or different types of batteries.
- Remove batteries if the device will not be used for an extended period.
3. Product Overview
Familiarize yourself with the components and controls of your alarm clock.
Front Display:
- Time Display: Shows current time in 12-hour or 24-hour format.
- Temperature Display: Shows ambient temperature in Celsius or Fahrenheit.
Rear Controls:
- SET Button: Used to enter setting modes (time, alarm).
- UP Button: Used to increase values or navigate menus.
- DOWN Button: Used to decrease values or navigate menus.
- MODE/V Button: Used to switch display modes or activate voice control (if available).
- RESET Button: Resets the device to factory settings.
- DC 5V Input: For connecting the USB power cable.
- Battery Compartment: Holds 3 x AAA batteries for backup power.

Figure 2: Rear view of the alarm clock, highlighting the SET, UP, DOWN buttons, power input, and battery compartment.
4. Setup
Powering the Device:
The alarm clock can be powered via the included USB cable or by 3 x AAA batteries (not included) for backup.
- USB Power: Connect the small end of the USB cable to the DC 5V input port on the back of the alarm clock. Connect the other end to a USB power adapter (not included) or a powered USB port.
- Battery Backup: Open the battery compartment cover on the back of the clock. Insert 3 x AAA batteries, ensuring correct polarity. Close the cover securely. Batteries are primarily for backup and may not power the display continuously.

Figure 3: The USB power cable provided for connecting the alarm clock to a power source.
5. Operating Instructions
Setting the Time:
- Press and hold the SET button until the hour digits begin to flash.
- Use the UP or DOWN buttons to adjust the hour.
- Press SET again to confirm the hour and move to minute setting.
- Use the UP or DOWN buttons to adjust the minutes.
- Press SET to confirm the minutes and exit time setting mode.
Setting the Alarm:
- Press the SET button once (do not hold) to cycle through display modes until 'AL' or an alarm icon appears.
- Press and hold the SET button again until the alarm hour digits flash.
- Use the UP or DOWN buttons to set the desired alarm hour.
- Press SET to confirm the alarm hour and move to alarm minute setting.
- Use the UP or DOWN buttons to set the desired alarm minutes.
- Press SET to confirm and exit alarm setting mode.
- To activate/deactivate the alarm, press the UP button while in normal time display mode. An alarm icon will appear/disappear on the display.
Switching Display Modes (12/24 Hour, Temperature Unit):
- In normal time display mode, press the UP button to switch between 12-hour and 24-hour formats.
- Press the DOWN button to switch between Celsius (°C) and Fahrenheit (°F) temperature units.
6. Maintenance
- Clean the alarm clock with a soft, dry cloth.
- Do not use abrasive cleaners, solvents, or harsh chemicals, as these may damage the mirror surface or casing.
- Ensure the device is unplugged and batteries are removed before cleaning.
7. Troubleshooting
- Display is blank: Check if the USB cable is securely connected to a power source. If using batteries, ensure they are inserted correctly and are not depleted.
- Alarm does not sound: Verify that the alarm is set and activated (alarm icon visible on display). Check the alarm volume if adjustable (this model may not have adjustable volume).
- Incorrect time/settings: Press the RESET button on the back of the unit using a thin object (e.g., a paperclip) to restore factory settings, then re-set the time and alarm.
- Temperature reading seems inaccurate: Ensure the clock is placed in a location away from direct heat sources or drafts that could affect ambient temperature readings.
8. Specifications
| Model Number | PTG-KA5879WD |
| Material | Wood veneer |
| Dimensions (L x W x H) | 15 cm x 7 cm x 4.5 cm (approximately 5.9 x 2.76 x 1.77 inches) |
| Weight | 245 g (approximately 0.54 lbs) |
| Color | Light wood casing, silver mirror display |
| Display Type | Digital LED |
| Special Feature | Alarm |
| Power Source | USB powered (cable included), 3 x AAA batteries (not included) for backup |
9. Warranty and Support
This product is manufactured by Karlsson. For any support inquiries, warranty information, or service requests, please refer to the retailer where the product was purchased or visit the official Karlsson website for contact details. Please retain your proof of purchase for warranty claims.





