1. Introduction
This manual provides detailed instructions for the setup, operation, and maintenance of your JALL PH04 14.5-inch Large Digital Wall Clock. Designed for clear visibility and ease of use, this battery-operated clock displays time, date, day of the week, and temperature. Please read this manual thoroughly before using the product to ensure proper function and longevity.

Image 1.1: Front view of the JALL PH04 Digital Wall Clock, showing its large display for time, date, day, and temperature.
2. Package Contents
- 1 x JALL PH04 14.5-inch Large Digital Wall Clock
- 1 x User Manual
- (4 AA batteries are required, not included)
3. Product Overview
The JALL PH04 Digital Wall Clock features a large LCD screen for easy readability and multiple functions including time, date, day of the week, and temperature display. It is designed for both wall mounting and desktop use.
3.1 Key Features
- 14.5-inch large LCD display for clear visibility.
- Battery operated for wireless placement.
- Displays time, date, day of the week, and temperature.
- Automatic Daylight Saving Time (DST) adjustment.
- Gradually increasing alarm sound.
- Switchable 12/24 hour format and °C/°F temperature units.
- Integrated desktop stand and wall-mount holes.
3.2 Button Functions (Top Panel)
- SET: Press to cycle through setting modes (Time, Year, Date). Hold for 2 seconds to enter DST setting.
- +/-: Adjusts values during setting. Also switches between 12/24 hour format.
- °C/°F: Switches between Celsius and Fahrenheit temperature display.
- AUTO DST: Activates or deactivates automatic Daylight Saving Time adjustment.
- ALARM SET: Press to set the alarm time. Hold for 2 seconds to enter alarm setting mode.
- ALARM ON/OFF: Toggles the alarm function on or off.
- DAY/TEMP: Press to choose display mode (Day only, Temp only, Day & Temp display every 10s in turns).

Image 3.1: The 4-in-1 display of the clock, showing time, date, day of week, and temperature simultaneously.
4. Setup
4.1 Battery Installation
- Locate the battery compartment on the back of the clock.
- Open the battery compartment cover.
- Insert 4 new AA batteries, ensuring correct polarity (+ and -).
- Close the battery compartment cover securely.

Image 4.1: Rear view of the clock, highlighting the battery compartment for 4 AA batteries.
4.2 Placement Options
The JALL PH04 clock offers versatile placement options:
- Desktop Use: Extend the integrated stand on the back of the clock to place it on any flat surface.
- Wall Mounting: Use the keyhole slots on the back of the clock to hang it securely on a wall. Ensure appropriate wall anchors and screws are used for stability.

Image 4.2: The clock displayed in both wall-mounted and desktop configurations.
5. Operating Instructions
5.1 Setting Time, Year, and Date
- Press and hold the SET button for 2 seconds to enter the time setting mode. The year will start flashing.
- Use the +/- buttons to adjust the year.
- Press SET again to confirm the year and move to month setting. The month will flash.
- Use the +/- buttons to adjust the month.
- Press SET again to confirm the month and move to date setting. The date will flash.
- Use the +/- buttons to adjust the date.
- Press SET again to confirm the date and move to hour setting. The hour will flash.
- Use the +/- buttons to adjust the hour.
- Press SET again to confirm the hour and move to minute setting. The minutes will flash.
- Use the +/- buttons to adjust the minutes.
- Press SET one last time to exit the setting mode.
5.2 Setting the Alarm
- Press and hold the ALARM SET button for 2 seconds to enter alarm setting mode. The alarm hour will flash.
- Use the +/- buttons to adjust the alarm hour.
- Press ALARM SET again to confirm the hour and move to alarm minute setting. The alarm minutes will flash.
- Use the +/- buttons to adjust the alarm minutes.
- Press ALARM SET one last time to exit the alarm setting mode.
- To activate or deactivate the alarm, press the ALARM ON/OFF button. An alarm icon will appear on the display when the alarm is active.

Image 5.1: The clock displaying an alarm time, with an illustration of the gradually increasing alarm sound.
5.3 Daylight Saving Time (DST)
The clock features an automatic DST adjustment function. To enable or disable this feature:
- Press the AUTO DST button to toggle the automatic DST function. When active, the clock will automatically adjust for Daylight Saving Time in March and November.

Image 5.2: Visual representation of the automatic DST adjustment, showing "Spring Forward" and "Fall Back" changes.
5.4 Temperature Unit and Time Format
- To switch between Celsius (°C) and Fahrenheit (°F) temperature display, press the °C/°F button.
- To switch between 12-hour and 24-hour time format, press the +/- button (when not in setting mode).

Image 5.3: Examples of the clock displaying time in 24-hour format with Fahrenheit and 12-hour format with Celsius.
5.5 Display Modes (Day/Temperature)
The clock allows you to customize how the day of the week and temperature are displayed:
- Press the DAY/TEMP button to cycle through the following display modes:
- Day display only
- Temperature display only
- Day & Temperature display alternating every 10 seconds
6. Maintenance
- Clean the clock's display and casing with a soft, dry cloth. Avoid using abrasive cleaners or solvents.
- Replace all 4 AA batteries when the low battery indicator appears or when the display becomes dim. Do not mix old and new batteries, or different types of batteries.
- Keep the clock away from direct sunlight, extreme temperatures, and high humidity.

Image 6.1: The clock displaying a low battery indicator, signaling it's time for battery replacement.
7. Troubleshooting
- Display is blank or dim:
- Ensure batteries are installed correctly with proper polarity.
- Replace old batteries with new ones.
- Time is incorrect:
- Follow the "Setting Time, Year, and Date" instructions to manually set the time.
- Check if AUTO DST is enabled and if your region observes Daylight Saving Time.
- Alarm does not sound:
- Ensure the alarm is activated by pressing the ALARM ON/OFF button (alarm icon should be visible).
- Verify the alarm time is set correctly.
- Temperature reading seems inaccurate:
- Ensure the clock is not placed near heat sources or in direct sunlight, which can affect temperature readings.
8. Specifications
| Brand | JALL |
| Model Number | PH04 |
| Display Type | Digital LCD |
| Product Dimensions | 13.5"W x 5.7"H |
| Power Source | 4 x AA Batteries (not included) |
| Material | Plastic |
| Special Features | Large Display, Battery Operated, Alarm, Auto DST, Temperature (°C/°F), Day, Date, 12/24 Hour Format, Wall Mount/Tabletop |
9. Warranty and Support
This JALL PH04 Digital Wall Clock comes with a 2-Year Warranty from the date of purchase. Please retain your proof of purchase for warranty claims.
For technical support, troubleshooting assistance, or warranty inquiries, please contact JALL customer service. Contact information may be found on the product packaging or the official JALL website.
Note: One of the provided videos mentions "Customer Support: WallerGo@outlook.com". This email address is provided for reference, but always refer to the most current contact information provided with your product.
10. Official Product Video
Watch this official product video for a visual guide on the JALL PH04 Digital Wall Clock's features and operation.
Video 10.1: An official video demonstrating the JALL PH04 Digital Wall Clock, showcasing its display and various functions.





