CHKOSDA CH3389

CHKOSDA CH3389 Digital Wall Clock User Manual

Model: CH3389

Introduction

This manual provides detailed instructions for the setup, operation, and maintenance of your CHKOSDA CH3389 Digital Wall Clock. Please read this manual thoroughly before use to ensure proper functionality and to maximize your product experience.

What's Included

Verify that all items are present in the package:

  • CHKOSDA CH3389 Digital Wall Clock
  • Remote Control
  • User Manual
  • USB Power Cord (10 ft)
  • Power Adapter
Contents of the CHKOSDA CH3389 Digital Wall Clock package, including the clock, remote control, user manual, USB power cord, and power adapter.

Image: Package contents of the CHKOSDA CH3389 Digital Wall Clock.

Product Overview

The CHKOSDA CH3389 is a large digital wall clock designed for clear visibility and versatile functionality. It features a 28.4-inch LED display with 5.9-inch extra-large digits, an ultra-narrow bezel, and flame-retardant material. Key functions include time display, calendar, temperature, alarm, countdown, count-up timer, and adjustable brightness.

Front view of the CHKOSDA CH3389 Digital Wall Clock displaying time, with a remote control shown below.

Image: Front view of the CHKOSDA CH3389 Digital Wall Clock and its remote control.

Diagram showing the dimensions of the CHKOSDA CH3389 Digital Wall Clock (27.56 inches wide, 6.5 inches high, 1.02 inches deep) and icons representing its features: Time Display, Calendar, Temperature, Alarm, Remote Control, Count Up, Count Down, Auto Dimmer, Workout Interval Timing, and 12/24 Hour mode.

Image: Overview of the CHKOSDA CH3389 Digital Wall Clock's dimensions and multifunctional features.

Key Features:

  • Large Display: 28.4-inch LED with 5.9-inch digits for clear visibility up to 100 feet.
  • Adjustable Brightness: 8 fixed levels and automatic dimming mode.
  • Multifunction: Time, Date, Temperature, Alarm, Countdown, Count-up, Stopwatch.
  • Time Formats: Easily switch between 12-hour and 24-hour display.
  • Backup Battery: CR2032 button battery (not included) preserves settings during power outages.
  • Remote Control: Operates within 30 feet.

Setup

1. Power Connection

  1. Connect the provided USB power cord to the clock's USB port.
  2. Plug the power adapter into a standard electrical outlet.
  3. The clock will power on and display the default time.
Rear view of the CHKOSDA CH3389 Digital Wall Clock showing the USB power port, hanging holes, and the CR2032 battery compartment for backup.

Image: Rear view of the clock showing power input and battery compartment.

2. Remote Control Battery Installation

The remote control requires a CR2032 button battery (not included). Open the battery compartment on the back of the remote and insert the battery with the correct polarity.

3. Mounting the Clock

The clock can be mounted on a wall using the hanging holes located on the back. Ensure the mounting surface is secure and use appropriate hardware (not included) for installation.

Image showing the CHKOSDA CH3389 Digital Wall Clock displaying time in a gym setting, highlighting its high visibility from 100 feet and remote control operation within 30 feet.

Image: The clock's high visibility and remote control range.

Operating Instructions

All functions are controlled via the included remote control.

1. Time Display and Format

  • The clock displays time, date, and temperature.
  • To switch between 12-hour and 24-hour formats, press the dedicated button on the remote.
Image illustrating the 12-hour mode (10:30:00) and 24-hour mode (22:30:00) display options on the digital clock.

Image: Switching between 12-hour and 24-hour time formats.

Image showing three display modes: Time (15:20:34), Date (25 06 15), and Temperature (28 C), indicating the clock can cycle through these displays.

Image: The clock's three display modes: Time, Date, and Temperature.

2. Brightness Adjustment

The clock offers two brightness modes:

  • Fixed Brightness: Choose from 8 adjustable levels using the remote control.
  • Automatic Dimming: The clock automatically adjusts its brightness based on ambient light conditions.
Diagram illustrating two brightness modes: Fixed Brightness with 8 adjustable levels, and Automatic Dimming which adjusts brightness based on light changes. Examples of different brightness levels are shown on the clock display.

Image: Fixed and automatic brightness adjustment modes.

Image showing three brightness functions: 8 fixed brightness levels (e.g., AM 7:00 - PM 7:00), auto-dimming (e.g., PM 7:00 - PM 10:00), and automatic turn-off (e.g., PM 10:00 - AM 7:00).

Image: Detailed illustration of the three brightness functions.

3. Timer Functions (Countdown & Stopwatch)

The clock includes both countdown and count-up (stopwatch) timer functionalities.

  • Use the remote control to select and set the desired timer mode.
  • Countdown Timer: Set a specific duration, and the clock will count down to zero.
  • Stopwatch (Count-up): Start from zero and count upwards.
Two images side-by-side. The left image shows the clock displaying a countdown timer (01:30:00) in a classroom setting. The right image shows the clock displaying a count-up timer (00:30:00) during a presentation.

Image: Examples of countdown and count-up timer functions.

4. Alarm Settings

The clock supports up to 16 individual alarm settings.

  • Press the "Alarm" button on the remote to enter alarm setting mode.
  • Use the navigation buttons to select an alarm slot (AL 01 - AL 16) and set the desired time.
  • Confirm your settings to activate the alarm.
Image showing the alarm clock display 'AL 01:--' and examples of multiple alarm settings from AL 01 to AL 16.

Image: Setting multiple alarms on the digital clock.

5. Temperature Display

The clock can display temperature in both Fahrenheit (°F) and Celsius (°C).

  • Use the remote control to switch between Fahrenheit and Celsius display modes.
Image showing the clock displaying temperature in Fahrenheit (86°F) and Celsius (30°C).

Image: Temperature display in Fahrenheit and Celsius.

Maintenance

  • Cleaning: Use a soft, dry cloth to clean the clock's display and casing. Avoid abrasive cleaners or solvents.
  • Power: Ensure the clock is connected to a stable power source.
  • Backup Battery: Replace the CR2032 button battery in the clock (if installed) and remote control annually or as needed to maintain settings during power interruptions.

Troubleshooting

ProblemPossible CauseSolution
Clock does not power on.No power supply; loose connection.Check power adapter and USB cable connection. Ensure outlet is functional.
Remote control not working.Remote battery depleted or incorrectly installed; obstruction.Replace CR2032 battery in the remote. Ensure correct polarity. Remove any obstructions between remote and clock. Ensure you are within 30 feet of the clock.
Time/settings reset after power outage.Backup battery (CR2032) in clock is depleted or not installed.Install or replace the CR2032 button battery in the clock's backup compartment. Note: This battery only preserves settings, it does not power the clock.
Display is too dim or too bright.Brightness settings incorrect; automatic dimming active.Adjust fixed brightness levels using the remote. If in auto-dimming mode, ambient light will dictate brightness.

Specifications

FeatureDetail
BrandCHKOSDA
Model NumberCH3389
Display TypeDigital LED
Product Dimensions27.55"W x 6.5"H
Power SourceCorded Electric (USB 10ft cable)
Special FeaturesAdjustable Brightness, Alarm, Auto Dimmable, Large Display, Timer (Countdown/Stopwatch)
Backup BatteryCR2032 (for settings memory, not included)
Remote Control RangeUp to 30 feet
Item Weight4.59 pounds (2.09 Kilograms)
UPC777989116168

Warranty and Support

The CHKOSDA CH3389 Digital Wall Clock comes with a 12-month warranty from the date of purchase. This warranty covers manufacturing defects and workmanship under normal use.

For technical support, troubleshooting assistance, or warranty claims, please contact CHKOSDA customer service through the retailer where the product was purchased or refer to the contact information provided on the official CHKOSDA website.

© 2025 CHKOSDA. All rights reserved.

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