EASYERA 15-inch Large Digital Atomic Wall Clock
Model: AC-WC150D
1. Product Overview
The EASYERA 15-inch Large Digital Atomic Wall Clock is designed for precise timekeeping and environmental monitoring. It automatically synchronizes with the WWVB radio signal, ensuring accurate time without manual adjustments, and features automatic Daylight Saving Time (DST) updates. The large display provides clear visibility of time, date, day of the week, indoor temperature, and humidity. It is battery-operated for a clean, cordless setup and offers flexible placement options for wall mounting or tabletop use.
Important Notes:
- This clock does not feature a backlight.
- AKST (Alaska Standard Time) and HST (Hawaii Standard Time) are not supported.
- Designed for DST-observing areas and not recommended for non-DST areas such as most of Arizona.
- Atomic signal reception is typically strongest at night.
2. Setup
2.1 Battery Installation
The clock requires 4 AA batteries (not included). Locate the battery compartment on the back of the clock. Open the cover and insert the batteries, ensuring correct polarity (+/-). Close the battery cover securely.

Image: Rear view of the clock with the battery compartment open, showing where to insert 4 AA batteries.
2.2 Initial Placement for Signal Reception
For optimal atomic signal reception, place the clock near a window, away from large metal objects, electronic devices, or concrete walls that may interfere with the signal. The clock will automatically attempt to synchronize with the WWVB radio signal, typically at 1 AM.

Image: The clock displaying time and a radio signal icon, illustrating its auto-sync feature. A map of the US indicates supported time zones (PST, MST, CST, EST).
2.3 Flexible Placement
The clock can be wall-mounted using the integrated keyholes or placed on a tabletop using its built-in kickstand.

Image: Demonstrates the clock's versatility for wall-mounted or tabletop placement.
2.4 Time Zone Selection
After battery installation, the clock will attempt to receive the atomic signal. Once a signal is received, you may need to select your correct time zone. Use the 'TIME ZONE' button on the back of the clock to cycle through PST (Pacific), MST (Mountain), CST (Central), and EST (Eastern).
Video: Demonstrates how to select the correct time zone (PST, MST, CST, EST) using the buttons on the back of the clock.
2.5 Daylight Saving Time (DST) Setting
The clock automatically adjusts for Daylight Saving Time. Ensure the DST setting is enabled if you reside in a DST-observing area. Use the 'DST' button on the back of the clock to toggle this feature.

Image: Illustrates the clock's automatic adjustment for Daylight Saving Time (Fall Back and Spring Forward).
2.6 Temperature Unit Selection
You can switch between Fahrenheit (°F) and Celsius (°C) for the indoor temperature display. Use the '°C/°F' button on the back of the clock to change the unit.
Video: Demonstrates how to switch between Fahrenheit and Celsius temperature units and how to view humidity percentage.
3. Operating Instructions
3.1 Understanding the Display
The large 15-inch display shows the current time (with seconds), date, day of the week, indoor temperature, and indoor humidity. The time format can be switched between 12-hour and 24-hour modes using the '12/24H' button.

Image: Close-up of the clock's display, highlighting its large numbers and various information fields including time, date, humidity, and temperature.
3.2 Monitoring Home Comfort
The clock continuously displays indoor temperature (range: 14.2°F–122°F) and humidity (range: 20%–95%). This feature helps you maintain a comfortable indoor environment.

Image: The clock monitoring home comfort, showing temperature and humidity readings in a bedroom setting.
3.3 Setting Alarms
The clock includes an alarm function. Use the 'ALARM' and 'ALARM SET' buttons on the back to set and activate your desired alarm time. You can set different alarms for weekdays, weekends, or any specific day.

Image: The clock displaying an alarm setting, indicating its use as a wake-up device.
4. Maintenance
4.1 Battery Replacement
When the battery indicator icon flashes on the display, it is time to replace the batteries. Open the battery compartment, remove the old batteries, and insert 4 new AA batteries, observing correct polarity. The clock may need to re-synchronize with the atomic signal after battery replacement.
4.2 Cleaning
To clean the clock, use a soft, dry cloth. Do not use abrasive cleaners, solvents, or spray directly onto the display or buttons, as this may damage the surface or internal components.
5. Troubleshooting
5.1 Atomic Signal Reception Issues
If the clock fails to receive the atomic time signal, the signal icon will not be displayed or will flash. Try the following:
- Relocate the clock to a different position, preferably near a window and away from potential interference sources (e.g., TVs, computers, large metal structures).
- Initiate a manual signal search by pressing the 'WWVB SEARCH' button on the back of the clock.
- Allow the clock to attempt synchronization overnight, as signal strength is often better during nighttime hours.
Video: Provides guidance on what to do if the clock is unable to receive the radio-controlled time signal.
5.2 Time Issue Fix Guide
If you experience persistent time inaccuracies, ensure your time zone and DST settings are correct. If the atomic signal is consistently weak or unavailable, you may need to manually set the time. Refer to the full manual for detailed manual time setting instructions.
Video: Offers a guide to fix common time-related issues with the clock.
6. Specifications
| Brand | EASYERA |
| Model Number | AC-WC150D |
| Display Type | Digital |
| Screen Size | 15 inches |
| Product Dimensions | 14.18"W x 6.2"H |
| Power Source | Battery Powered (4 AA batteries required, not included) |
| Operation Mode | Atomic |
| Indoor Temperature Range | 14.2°F – 122°F |
| Indoor Humidity Range | 20% – 95% |
| Special Features | Large Display, Auto DST, Temperature & Humidity Monitor, Alarm Clock |
| Mounting Type | Wall Mount / Desktop |
7. Warranty and Support
For warranty information or technical support, please refer to the product packaging or contact EASYERA customer service directly. Keep your purchase receipt for warranty claims.




