KOSUMOSU Digital Alarm Clock (Model ACD-330BL) User Manual

1. Introduction

This manual provides detailed instructions for the setup, operation, and maintenance of your KOSUMOSU Digital Alarm Clock, Model ACD-330BL. This device features a 6.7-inch LED display, dual alarms, 12/24-hour format, date, day of week, seconds, temperature display (℉/℃), and both automatic and manual dimming capabilities.

2. Package Contents

Please verify that all items listed below are included in your package:

• KOSUMOSU Digital Alarm Clock
• USB Power Cable (1.5-meter)
• User Manual
• Bracket Base
• CR2025 Button Cell (for time backup)

Note: A 5V/1A AC adapter is required for operation and is not included in the package.

Image: Contents of the KOSUMOSU Digital Alarm Clock package.

3. Product Overview

3.1 Display Elements

The clock features a large LED display showing:

• Time (12-hour with AM/PM indicator or 24-hour format)
• Date (Month/Day)
• Day of the Week
• Seconds (optional)
• Indoor Temperature (℉ or ℃)
• Alarm 1 and Alarm 2 indicators

Image: Front display of the KOSUMOSU Digital Alarm Clock.

3.2 Function Buttons

The function buttons are located on the back of the clock. Familiarize yourself with their positions and functions:

• '+' Button: Short press to increase value or adjust dimming. Long press for auto dimming.
• '-' Button: Short press to decrease value or adjust dimming.
• SET Button: Used to enter setting modes for time, date, and alarms.
• ℉/℃ Button: Short press to switch between Fahrenheit and Celsius.
• 12h/24h Button: Short press to toggle 12-hour/24-hour format. Long press to toggle seconds display.
• Alarm 1 Set Button: Short press to toggle Alarm 1 on/off. Long press to set Alarm 1 time.
• Alarm 2 Set Button: Short press to toggle Alarm 2 on/off. Long press to set Alarm 2 time.
• SNOOZE Button (Top): Press the top surface of the clock to activate snooze during an alarm.

Image: Rear panel with function buttons and power input.

4. Setup

4.1 Power Connection

Connect the provided USB power cable to the clock's USB-A port. Plug the other end into a 5V/1A AC adapter (not included) and then into a power outlet. The clock requires continuous power to operate.

Image: USB power connection for the alarm clock.

4.2 Backup Battery Installation

The CR2025 button cell battery is pre-installed or included separately. This battery serves as a backup to retain time and settings during power outages. It does not power the clock for continuous operation.

5. Operating Instructions

5.1 Setting Time and Date

1. Press and hold the SET button to enter time setting mode. The hour digits will flash.
2. Use the '+' or '-' buttons to adjust the hour.
3. Press SET again to confirm the hour and move to minute setting. Adjust minutes with '+' or '-'.
4. Continue pressing SET to cycle through setting the year, month, and day, adjusting each with '+' or '-'.
5. Press SET one last time to exit setting mode.
6. To switch between 12-hour and 24-hour format, short press the 12h/24h button.

5.2 Setting Alarms

The clock supports two independent alarms (Alarm 1 and Alarm 2).

1. Press and hold the Alarm 1 Set button (or Alarm 2 Set) to enter alarm setting mode. The alarm hour digits will flash.
2. Use the '+' or '-' buttons to adjust the alarm hour.
3. Press the respective Alarm Set button again to confirm the hour and move to minute setting. Adjust minutes with '+' or '-'.
4. Press the Alarm Set button again to select the alarm cycle: everyday, workdays (Mon-Fri), or weekends (Sat-Sun). Adjust with '+' or '-'.
5. Press the Alarm Set button one last time to exit alarm setting mode.
6. To activate or deactivate an alarm, short press the corresponding Alarm Set button. An alarm icon will appear on the display when active.

Image: Dual alarm and snooze function illustration.

5.3 Snooze Function

When an alarm sounds, press the top surface of the clock (the SNOOZE area) to activate the snooze function. The alarm will pause for 5 minutes and then sound again. The alarm duration is 5 minutes if not snoozed or turned off.

5.4 Dimming Control

The clock offers both manual and automatic dimming options:

• Manual Dimming: Short press the '+' or '-' buttons to cycle through High, Medium, Low brightness levels, or turn the LED display off.
• Auto Dimming: Long press the '+' button to activate auto dimming. The clock will adjust its brightness based on ambient light conditions using its built-in light sensor.

Image: Dimming levels and display options.

5.5 Temperature Display

Short press the ℉/℃ button to switch the temperature display between Fahrenheit (℉) and Celsius (℃).

5.6 Seconds Display

Long press the 12h/24h button to toggle the display of seconds on or off.

6. Troubleshooting

• Clock not turning on: Ensure the USB power cable is securely connected to both the clock and a functional 5V/1A AC adapter, which is plugged into a live power outlet.
• Display too bright or too dim: Use the '+' or '-' buttons to manually adjust brightness. If in auto-dimming mode, ensure the light sensor on the back of the clock is not obstructed.
• Alarm not sounding: Verify that the alarm is activated (alarm icon visible on display) and that the alarm time and cycle are correctly set.
• Time/settings lost after power outage: Check if the CR2025 button cell backup battery is correctly installed and has sufficient charge. This battery is crucial for retaining settings during power interruptions.
• Temperature reading seems inaccurate: The indoor temperature sensor provides an approximation. For precise measurements, use a dedicated thermometer.

7. Specifications

8. Warranty and Support

KOSUMOSU provides a 2-year warranty for this product. If you encounter any quality or usage-related problems, please contact KOSUMOSU customer service via email. We are committed to assisting you in resolving any issues promptly.

For support, please refer to the contact information provided on the product packaging or the official KOSUMOSU website.