JUSHENG EN8830-1 FM Radio Alarm Clock User Manual

1. Introduction

Thank you for choosing the JUSHENG EN8830-1 FM Radio Alarm Clock. This device combines a large LED display alarm clock with an FM radio, dual alarm functionality, and a convenient USB charging port. Please read this manual carefully to ensure proper use and to fully understand its features.

Figure 1: Front view of the JUSHENG EN8830-1 FM Radio Alarm Clock. The large green LED display shows '23:59', with small icons for Alarm 1, Alarm 2, and Sleep Timer (SL) visible below the time. A power cable is visible on the right.

2. Package Contents

Upon opening the package, please verify that all items listed below are present and in good condition:

• 1 x JUSHENG EN8830-1 FM Radio Alarm Clock
• 1 x USB Data Line (Power Cable)
• 1 x Instruction Manual

Figure 2: The JUSHENG FM Radio Alarm Clock, its USB data line, and instruction manual are shown next to its packaging box, illustrating the complete package contents.

3. Product Overview

3.1 Key Features

• Large LED Screen: Easy-to-read 6-inch display.
• Time Display: Supports 12/24-hour format.
• Dual Alarms: Set two independent alarms.
• Adjustable Snooze: Snooze duration from 5 to 60 minutes (default 9 minutes).
• FM Radio: Built-in FM radio with storage for up to 15 channels (frequency range 76.0-108.0 MHz).
• Adjustable Brightness: 4 levels of manual brightness adjustment or automatic dimming.
• Volume Control: Adjustable alarm and radio volume.
• Time Memory Function: Built-in button battery preserves time settings during power outages.
• USB Charging Port: Convenient 5V1A USB output for charging other devices.
• Sleep Timer: Option to set a sleep timer from 5 to 90 minutes for radio playback.

3.2 Controls and Ports

The alarm clock features intuitive controls located on the top panel and essential ports on the rear.

Figure 3: Top view of the JUSHENG EN8830-1 FM Radio Alarm Clock, showing the control buttons. The central button is labeled 'SNOOZE DIMMER', surrounded by other function buttons for radio, volume, alarm settings, and time adjustment.

Figure 4: Rear view of the JUSHENG EN8830-1 FM Radio Alarm Clock, highlighting the USB charging port, power input, and a compartment for the backup battery.

4. Setup

4.1 Power Connection

1. Connect the provided USB data line to the power input port on the back of the alarm clock.
2. Plug the other end of the USB data line into a standard 5V1A USB power adapter (not included) or a compatible USB port.
3. The display will light up, indicating the clock is powered on.

4.2 Initial Time Setting

After connecting power, the clock may display a default time or 00:00. Set the correct time as follows:

1. Press and hold the TIME SET button (refer to Figure 3 for button location). The hour digits will begin to flash.
2. Use the UP or DOWN buttons to adjust the hour.
3. Press TIME SET again to confirm the hour and move to minute adjustment. The minute digits will flash.
4. Use the UP or DOWN buttons to adjust the minutes.
5. Press TIME SET one more time to save the time and exit time setting mode.

4.3 12/24 Hour Format Selection

To switch between 12-hour and 24-hour time formats:

• While in normal time display mode, press the TIME SET button briefly.
• The display will toggle between 12-hour (with AM/PM indicator) and 24-hour formats.

5. Operating Instructions

5.1 Setting Alarms (Alarm 1 & Alarm 2)

The clock supports two independent alarms.

1. Press the ALARM 1 button (or ALARM 2 button) once. The alarm time will display, and the hour digits will flash.
2. Use the UP or DOWN buttons to set the desired alarm hour.
3. Press the ALARM 1 (or ALARM 2) button again. The minute digits will flash.
4. Use the UP or DOWN buttons to set the desired alarm minutes.
5. Press the ALARM 1 (or ALARM 2) button a third time to select the alarm source: bU (buzzer) or rAd (FM radio). Use UP/DOWN to choose.
6. Press the ALARM 1 (or ALARM 2) button a fourth time to set the alarm volume (L01-L15). Use UP/DOWN to adjust.
7. Press the ALARM 1 (or ALARM 2) button one last time to save the alarm setting and activate the alarm. The corresponding alarm icon (⏰1 or ⏰2) will appear on the display.

To deactivate an alarm, press the corresponding ALARM button until the alarm icon disappears from the display.

Figure 5: This image demonstrates the dual alarm clock feature, showing two different alarm times (7:00 and 10:00) set on the display. The central 'SNOOZE DIMMER' button is highlighted, indicating its role in managing alarms.

5.2 Snooze Function

When an alarm sounds:

• Press the SNOOZE/DIMMER button to temporarily silence the alarm. The alarm will sound again after the set snooze duration.
• The default snooze time is 9 minutes. To adjust the snooze duration (5-60 minutes), press and hold the SNOOZE/DIMMER button while the alarm is sounding, then use the UP/DOWN buttons to select the desired time.
• To turn off the alarm completely, press any other button (e.g., ALARM 1, ALARM 2, RADIO) or let it ring for 60 minutes without intervention.

5.3 FM Radio Operation

1. Press the RADIO button to turn on the FM radio. The display will show the current frequency.
2. Automatic Scan: Press and hold the RADIO button to automatically scan and save available FM stations. The clock can store up to 15 channels.
3. Manual Tuning: Briefly press the UP or DOWN buttons to manually tune the frequency step by step.
4. Switching Presets: After an automatic scan, briefly press the RADIO button to cycle through the saved preset stations.
5. Volume Adjustment: Use the VOL+ or VOL- buttons to adjust the radio volume.
6. To turn off the FM radio, press the RADIO button again.

Figure 6: This image highlights the FM Radio function of the alarm clock, indicating a frequency range of 76.0-108.0MHz and the capability to preset up to 15 stations for easy access.

5.4 Display Brightness Adjustment

The clock offers both manual and automatic brightness control.

• Manual Adjustment: Briefly press the SNOOZE/DIMMER button while in normal time display mode to cycle through 4 levels of brightness (Bright, Medium, Dim, Off).
• Automatic Dimmer: The clock can automatically adjust its brightness based on ambient light. Refer to the specific instructions in your full manual for activating this feature, as it may vary.

Figure 7: This image illustrates the four adjustable brightness levels for the LED display: Bright, Medium, Dim, and Off, allowing users to customize visibility according to their preference.

5.5 USB Charging Port

The alarm clock features a USB output port (5V1A) on its rear, allowing you to charge other devices such as smartphones.

• Connect your device's USB charging cable to the USB output port on the back of the alarm clock.
• Ensure the alarm clock is powered on.
• Your device will begin charging.

Figure 8: The alarm clock is shown on a desk, with a smartphone connected to its rear USB charging port, demonstrating its capability to charge external devices.

5.6 Sleep Timer

The sleep timer allows you to fall asleep to the FM radio, which will automatically turn off after a set duration.

1. Turn on the FM radio.
2. Press the SLEEP button (refer to Figure 3). The display will show the default sleep timer duration (e.g., 90 minutes).
3. Repeatedly press the SLEEP button to cycle through available durations (5-90 minutes) or to turn off the sleep timer.
4. The 'SL' icon will appear on the display when the sleep timer is active.

6. Maintenance

• Clean the clock with a soft, dry cloth. Do not use abrasive cleaners or solvents.
• Avoid exposing the clock to extreme temperatures, direct sunlight, or high humidity.
• Do not disassemble the device. Refer to qualified service personnel for repairs.
• The built-in button battery provides time memory during power outages. If the time is consistently lost after power disconnection, the button battery may need replacement by a professional.

7. Troubleshooting

8. Specifications

9. Warranty and Support

This product comes with a standard manufacturer's warranty. For specific warranty details, please refer to the warranty card included with your purchase or contact JUSHENG customer support. If you encounter any issues not covered in this manual, please reach out to your retailer or the manufacturer for assistance.