Product Overview
The CHKOSDA CH3387-GPS-W is an oversized 18.7-inch digital wall clock designed for accurate timekeeping. It features GPS auto-synchronization, eliminating the need for manual time adjustments. The clock displays time, date, and temperature, and includes multiple alarm settings, countdown, and countup timer functions. Its large LED digits ensure clear visibility from a distance, and the auto-dimming feature adjusts brightness for optimal comfort.
Image: The CHKOSDA 18.7 Inch GPS Auto-Sync Digital Wall Clock, showcasing its large, clear digital display.
Setup and Installation
This clock is designed for hassle-free setup with GPS auto-synchronization.
Package Contents:
- Digital Wall Clock Unit
- Remote Control
- USB Adapter
- 10ft Power Cord
- Mounting Screws
Image: The clock unit, remote control, USB adapter, power cord, and mounting screws included in the package.
Placement for GPS Signal:
For optimal GPS signal reception, place the clock near a window with a clear view of the sky. The clock automatically calibrates time via satellite signals every 10 minutes. It does not require Wi-Fi or an external antenna.
- Recommended Locations: Classrooms, meeting rooms, gyms, living rooms, offices.
- Avoid Locations: Basements, underground garages, operating rooms, or areas with metal structures, as these can block satellite signals.
Image: Visual guide for clock placement, indicating areas with clear sky view are suitable for GPS synchronization, while enclosed or metal-heavy areas are not.
Mounting and Power Connection:
- Choose a suitable location with a clear sky view.
- Mount the clock on the wall using the provided mounting screws.
- Plug in the clock using the 10ft power cord and USB adapter. The clock runs on AC power.
- Observe the green indicator light. A steady green light indicates successful connection to satellites and time synchronization. If the light does not illuminate or flashes, reposition the clock to improve signal reception.
Image: Step-by-step visual instructions for setting up the GPS wall clock, including placement, mounting, power, and GPS indicator.
Operating Instructions
The clock offers various functions controlled via the included remote.
Basic Display Modes:
The clock features a 6-inch jumbo LED display for clear readability. It can display:
- Time (12/24-hour format)
- Date (Year, Month, Day)
- Temperature (°F/°C)
Video: Demonstration of the clock cycling through Year, Month/Day, Temperature, and Time displays.
Time Zone Adjustment:
The default time zone is GMT+8. To adjust:
- Press the globe button on the remote control to enter the time zone settings page.
- Press the plus (+) or minus (-) button repeatedly to advance or decrease the time zone by 0.5 hours per press.
- Once your local time zone is displayed, press RET to confirm. The clock will then automatically display the local time.
Alarms:
The clock supports up to 16 programmable alarm settings. Refer to the remote control's specific buttons for setting and managing alarms (e.g., A1, A2, A3, ALSET).
Countdown and Countup Timers:
Utilize the countdown and countup functions for various activities such as exams, cooking, or workouts.
- Countup: Tracks up to 99:59:59 (from 00:00:00). Auto-displays HH:MM (for 60+ min) or MM:SS (for <60 min).
- Countdown: Maximum duration 999 Days 23:59:59. Auto-displays DD Days (for 24+ hrs), HH:MM (for 60+ min), or MM:SS (for <60 min).
Video: Demonstration of the clock's countup and countdown timer functions.
Brightness Adjustment:
The clock features 8 adjustable brightness levels and an auto-dimming sensor. This ensures clear visibility during the day and a gentle nightlight effect after dark. Use the remote control's DIM buttons to manually adjust brightness or enable auto-dimming.
Image: Visual representation of the 8-level brightness settings and the auto light adjustment feature for optimal visual comfort.
Maintenance
Materials and Durability:
The clock is constructed with a high-transparency acrylic panel and a heat-resistant ABS backplate, ensuring moisture resistance and durability. The flame-retardant fiberglass PCB enhances household protection.
Image: Detailed views of the clock's high-clarity acrylic panel, heat-resistant ABS back panel, and overall back design, highlighting its robust construction.
Power Outage Auto-Recovery:
The clock includes a built-in CR2032 battery. This battery's sole purpose is to back up the wall clock settings during a power outage, ensuring that your time settings are retained and automatically restored once power is re-established. No frequent battery changes are required for operation.
Image: Illustration of the clock's auto-recovery feature, showing how it retains time settings during a power outage and restores them upon power return.
Troubleshooting
GPS Signal Issues:
If the green indicator light on the clock does not illuminate or flashes, it signifies that satellite signals are not being received. To resolve this:
- Ensure the clock is placed near a window with an unobstructed view of the sky.
- Avoid locations such as basements, underground garages, operating rooms, or areas with significant metal structures, as these environments can block GPS signals.
- Adjust the clock's installation location if necessary to improve signal reception.
Incorrect Time Display:
If the time displayed is incorrect after initial setup, verify the time zone setting using the remote control as described in the
