1. Introduction
The Baseus Heyo Rotation Countdown Timer is a versatile digital timer designed to enhance productivity and time management in various settings, including cooking, studying, exercise, and meetings. Featuring an intuitive rotating knob for setting time, a clear LED digital display, and adjustable sound reminders, this timer helps you stay focused and organized.

2. Specifications
| Feature | Description |
|---|---|
| Brand | Baseus |
| Name | Baseus Heyo Rotation Countdown Timer |
| Model Number | YGH-5237 |
| Material | ABS |
| Color | Black |
| Voltage | 4.5V (3*AAA Batteries, not included) |
| Working Temperature | 0°C - 50°C |
| Time of Endurance | 3 months (battery life) |
| Timing Range | 0-99 minutes, 0-55 seconds |
| Volume Gears | Mute 0db / Small volume 60-70db / Large volume 80-90db |
| Size | 78*78*27.5mm |
| Weight | 90g (Without battery) |


3. Package Contents
- 1 x Baseus Heyo Rotation Countdown Timer (Model YGH-5237)
- 1 x User Manual
Note: 3 AAA batteries are required for operation and are not included in the package.
4. Setup
- Battery Installation: Locate the battery compartment on the back of the timer. Insert 3 AAA batteries, ensuring correct polarity (+/-).
- Placement: The timer features a magnetic back, allowing it to be easily attached to metal surfaces such as whiteboards, refrigerators, or other magnetic-receptive areas.


5. Operating Instructions
5.1 Countdown Setting
- Set Time: Rotate the outer knob to set the desired countdown time.
- Adjust Minutes: Rotate the knob quickly (angle greater than 60 degrees) to adjust the minute value.
- Adjust Seconds: Rotate the knob slowly to adjust the second value.
- Start/Pause: Press the button on the front of the timer to start or pause the countdown.

5.2 Counting Up (Stopwatch) Setting
- Reset to Zero: Ensure the timer display shows "00:00".
- Start Counting Up: Press the button on the front of the timer to start counting up (stopwatch function).
- Pause/Resume: Press the button again to pause or resume the counting.
5.3 Volume Adjustment
The timer offers three volume settings to suit different environments:
- Mute: 0dB
- Small Volume: 60-70dB
- Large Volume: 80-90dB
Adjust the volume using the switch located on the side/back of the timer (refer to product images for exact location).


5.4 General Usage

6. Maintenance
- Clean the timer with a soft, dry cloth. Do not use abrasive cleaners or solvents.
- Avoid exposing the timer to extreme temperatures or direct sunlight.
- If the display becomes dim or the alarm sound weakens, replace the AAA batteries.
- Store the timer in a dry place when not in use for extended periods.
7. Troubleshooting
- Timer not turning on: Ensure batteries are correctly installed and not depleted. Replace with new AAA batteries if necessary.
- Display is dim: This usually indicates low battery power. Replace the AAA batteries.
- Alarm not sounding: Check the volume setting. Ensure it is not set to mute (0dB).
- Inaccurate timing: Ensure the knob is rotated precisely when setting time. Electronic timing is generally accurate.
- Timer not sticking to surface: The magnetic attachment works best on flat, clean metal surfaces. Ensure the surface is suitable and clean. Note that the magnet strength might be perceived as weak by some users.
8. User Tips
- Volume Control: Take advantage of the three volume settings (mute, small, large) to adapt the timer's alert to your environment, whether it's a quiet study session or a busy kitchen.
- Stopwatch Function: Don't forget the timer can also count up, making it useful as a stopwatch for tracking elapsed time during workouts or experiments.
- Magnetic Placement: While convenient, some users note the magnet strength can be weak. For critical timing, consider placing it on a flat surface to avoid accidental falls.
- Not a Clock: This device is solely a timer/stopwatch and does not display the current time.
- No Multiple Alarms: The timer is designed for a single countdown or count-up session and does not support setting multiple alarms or pausing/resuming a countdown from where it left off.
- Not Waterproof: Keep the timer away from water and high humidity to prevent damage.
9. Warranty and Support
For warranty information or technical support, please contact the manufacturer, Baseus, or the authorized seller from whom you purchased the product. Keep your purchase receipt as proof of purchase.





