Introduction
The CHEMEILAI Multi-Function Electronic Timer is a versatile and compact device designed for precise time management across various activities, including cooking, studying, exercising, and more. This manual provides comprehensive instructions to help you set up, operate, and maintain your timer effectively.

This image displays the four multi-function electronic timers included in the set, showcasing their distinct colors: pink, blue, green, and white. Each timer features a clear digital display and three control buttons.
Product Features
- High-quality ABS plastic shell for durability.
- Large LCD screen for clear number display.
- User-friendly plastic buttons for easy operation.
- Built-in retractable stand for tabletop placement.
- Strong magnetic back for attachment to metallic surfaces.
- Hidden hanging hole for convenient storage.
- Loud and clear alarm sound.
- Supports both count-up and count-down functions.

This diagram highlights the physical features of the timer, including its retractable stand for desktop use, a strong magnet for attaching to refrigerators or other metal surfaces, a hidden hanging hole, and the location of the on/off switch and AAA battery compartment.
Setup
Battery Installation
The timer requires one AAA battery (not included) for operation.
- Locate the battery compartment on the back of the timer.
- Slide open the battery door.
- Insert one AAA battery, ensuring correct polarity (positive and negative poles are indicated inside the compartment).
- Close the battery door securely.
- If the display is unclear or the sound is weak, replace the battery.
Operating Instructions
Power On/Off
Locate the power switch on the side of the timer to turn it on or off.
Setting the Timer
Count-Down Function
- Press the M (Minute) and S (Second) buttons simultaneously to clear the display to "00:00".
- Press the M button to set the desired minutes. Hold the button to fast forward the time.
- Press the S button to set the desired seconds. Hold the button to fast forward the time.
- Press the START/STOP button to begin the countdown.
- When the countdown reaches "00:00", an alarm will sound. Press START/STOP to stop the alarm and return to the previously set time (memory function).
Count-Up Function (Stopwatch)
- Ensure the display is cleared to "00:00" by pressing M and S simultaneously.
- Press the START/STOP button to begin counting up.
- Press START/STOP again to pause the count.
- Press START/STOP to resume.
- Press M and S simultaneously to reset the timer to "00:00".

This visual guide demonstrates the two primary modes of operation: Count-Up (stopwatch) and Count-Down. It clearly shows which buttons to press for setting minutes and seconds, initiating the timer, pausing, and resetting to zero. The memory function for countdown is also indicated.
Placement and Portability
Versatile Placement Options
- Retractable Stand: Use the built-in stand to place the timer on any flat surface, such as a kitchen counter or desk.
- Magnetic Back: The strong magnet allows the timer to be securely attached to metallic surfaces like refrigerators or whiteboards.
- Hanging Hole: A hidden hole is provided for hanging the timer, offering additional storage and accessibility options.

This image collage showcases the flexibility of the timer's design, illustrating how it can be used with its integrated stand on a table, magnetically attached to a refrigerator, or hung from a hook using its built-in loop, making it adaptable to various environments.
Maintenance
Care and Cleaning
- Wipe the timer with a soft, dry cloth. Do not use abrasive cleaners or immerse in water.
- Avoid exposing the timer to extreme temperatures or direct sunlight for prolonged periods.
- If the timer will not be used for an extended period, remove the AAA battery to prevent leakage.
Troubleshooting
Common Issues
| Problem | Solution |
|---|---|
| Display is dim or blank. | Replace the AAA battery. Ensure correct polarity. |
| Alarm sound is weak. | Replace the AAA battery. |
| Buttons are unresponsive. | Ensure the timer is powered on. Try replacing the battery. |
| Timer does not reset to 00:00. | Press the M and S buttons simultaneously to reset. |
Specifications
Product Specifications
| Feature | Detail |
|---|---|
| Model Number | JS-118 |
| Brand | CHEMEILAI |
| Colors | Blue, Green, Pink, White |
| Material | ABS Plastic, Acrylonitrile Butadiene Styrene |
| Dimensions (D x W x H) | 0.86" x 2.83" x 2.56" |
| Item Weight | 1.6 ounces |
| Screen Size | 2.7 Inches |
| Power Source | 1 x AAA Battery (not included) |
| UPC | 191762761541 |
Warranty and Support
Warranty Information
For any issues with your CHEMEILAI Multi-Function Electronic Timer, including dissatisfaction with your purchase or product damage, please contact Amazon customer service in a timely manner for resolution.
For further assistance or inquiries, please refer to the seller's contact information on the product's purchase page.