Product Overview
The ThreeH Digital Wall Clock H-HD19 is a versatile device designed to display time, day of the week, date, temperature, and humidity. It functions as both a wall-mounted and desk clock, featuring a large, clear display for easy readability. This battery-operated alarm clock is suitable for various indoor environments.
Key Features
- Large, Clear Display: TN high-resolution screen clearly shows time, day, date, temperature, and humidity. Functions as a digital temperature and humidity monitor.
- Silent Operation: Unlike mechanical alarm clocks, this clock operates silently, ensuring a peaceful sleeping environment.
- Versatile Placement: Can be hung on a wall or used as a desktop alarm clock with its integrated stand.
- User-Friendly Controls: Easily switch between 12/24 hour modes and utilize the snooze function by pressing the button on the back.
Setup Guide
Battery Installation
The clock requires three AAA batteries (not included). Locate the battery compartment on the back of the device. Insert the batteries, ensuring correct polarity (+/-). Close the compartment cover securely.

Initial Power On
Once batteries are installed, the display will activate. The clock will typically start with a default time and date, which will need to be adjusted.
Operating Instructions
Setting Time and Date
Press and hold the "SET" button on the back of the clock to enter time setting mode. Use the "UP" and "DOWN" buttons to adjust the hour, minute, year, month, and day. Press "SET" again to confirm each selection and move to the next setting. The clock supports 12-hour and 24-hour formats.

Setting the Alarm
Press the "ALARM" button to view the current alarm time. To set the alarm, press and hold the "ALARM" button. Use the "UP" and "DOWN" buttons to adjust the alarm hour and minute. Press "ALARM" again to confirm. To activate or deactivate the alarm, press the "ALARM" button once briefly.
Snooze Function
When the alarm sounds, press the "SNOOZE" button on the back of the clock to temporarily silence the alarm. The alarm will sound again after a short interval.
Temperature and Humidity Display
The clock continuously displays indoor temperature and humidity. To switch between Celsius (°C) and Fahrenheit (°F) temperature units, locate the dedicated button (often labeled "°C/°F" or integrated with another button, refer to the small instruction sheet for exact location if not obvious).

Maintenance
Cleaning
Wipe the clock's surface with a soft, dry cloth. Avoid using abrasive cleaners or solvents, as these may damage the display or casing.
Battery Replacement
When the display dims or functions become erratic, it's time to replace the batteries. Follow the battery installation steps outlined in the "Setup Guide". Always replace all three AAA batteries at the same time for optimal performance.
Troubleshooting
- Display is Blank or Dim: Check if batteries are correctly installed and not depleted. Replace with fresh AAA batteries if necessary.
- Alarm Does Not Sound: Ensure the alarm is activated (look for an alarm icon on the display). Verify the alarm time is set correctly.
- Incorrect Time/Date: Re-enter time and date settings as per the "Operating Instructions".
- Temperature/Humidity Readings Seem Inaccurate: Ensure the clock is placed in a stable indoor environment, away from direct sunlight, heat sources, or drafts that could affect readings.
Specifications
| Brand | ThreeH |
| Model Number | H-HD19 |
| Display Type | Digital |
| Power Source | Battery Powered (3 AAA batteries, not included) |
| Product Dimensions | 7.8"W x 7.8"H |
| Item Weight | 370 Grams |
| Material Type | Plastic |
| Mounting Type | Desk Clock, Wall Mount |
| Special Features | Large Display, Temperature, Humidity, Date, Week, Alarm Clock, Snooze Function |
Warranty and Support
For warranty information or technical support, please refer to the contact details provided on the product packaging or visit the official ThreeH website. Keep your purchase receipt for warranty claims.





