1. Introdución e finalview
The RCA RC551 Digital Clock Radio is designed for convenience and reliability, featuring a compact design suitable for various spaces like nightstands or desks. It offers a large, easy-to-read display for clear time-checking. Key features include a dual wake alarm, a sleep timer, and a snooze function. Users can choose to wake up to either the FM radio or a traditional alarm sound. For uninterrupted operation, the clock radio includes a 'No Worry' backup battery option, ensuring your alarm functions even during power outages.

Figura 1: Fronte view of the RCA RC551 Digital Clock Radio, displaying the time 12:08 in red LED digits.
2. Configuración
2.1 Conexión de alimentación
Connect the provided AC power adapter to the DC IN jack on the back of the unit and then plug it into a standard wall outlet. The display will illuminate, and the clock will be ready for initial setup.
2.2 Instalación da batería de reserva
For the 'No Worry' backup battery feature, install 2 AAA batteries (not included) into the battery compartment located on the bottom of the unit. This ensures that time and alarm settings are retained during a power interruption.
2.3 Axuste da hora inicial
Upon first power-up or after a prolonged power outage without backup batteries, the display may flash. Follow the operating instructions below to set the current time.
3. Instrucións de funcionamento
3.1 Axuste da hora actual
- Manteña premido o HORARIO botón ata que os díxitos das horas comecen a parpadear.
- Preme o HORA repetidamente para axustar a hora. Observe o indicador PM para obter un axuste correcto de AM/PM.
- Preme o MINUTO botón repetidamente para axustar os minutos.
- Preme HORARIO de novo para confirmar e saír do modo de axuste da hora.
3.2 Setting the Dual Alarms (Alarm 1 and Alarm 2)
The RC551 features two independent alarms. Each can be set to a specific time and wake-up source (FM radio or buzzer).
- Manteña premido o ALARMA 1 or ALARMA 2 button until the alarm time digits begin to flash.
- Preme o HORA button repeatedly to adjust the alarm hour.
- Preme o MINUTO botón repetidamente para axustar os minutos da alarma.
- Preme o ALARMA 1 or ALARMA 2 de novo para seleccionar a fonte de espertar:
- Zumbador: An audible beep will sound.
- Radio FM: The last tuned FM station will play.
- Prema o botón correspondente ALARMA button one more time to confirm and activate the alarm. An indicator (AL1 or AL2) will appear on the display.
3.3 Función Snooze
Cando soe unha alarma, prema o botón grande APAGAR/DORME button to temporarily silence the alarm for approximately 9 minutes. The alarm will resume after the snooze period.
3.4 Temporizador de sono
The clock radio includes a sleep timer function, allowing you to fall asleep to the radio, which will automatically turn off after a set duration. Refer to the full product manual for detailed instructions on setting the sleep timer duration.
3.5 Funcionamento da radio FM
- Preme o RADIO ON/OFF botón para activar ou desactivar a radio FM.
- Usa o SCAN/SET button to automatically scan for and tune to the next available FM station.
- Axuste o volume empregando o VOLUME + e VOLUME - botóns.
3.6 Brillo da pantalla
The large display is designed for readability. The brightness level is typically fixed for optimal visibility in various lighting conditions. Some models may feature an automatic dimming sensor or manual dimmer controls; consult the full product manual for specific details on your unit.
3.7 porto de carga USB
The RC551 may include a built-in USB port for charging compatible devices. Locate the USB port on the unit and connect your device's charging cable. This port is intended for charging and does not support data transfer.

Figura 2: Arriba view of the RCA RC551 Digital Clock Radio, highlighting the various control buttons.

Figura 3: Atrás view of the RCA RC551 Digital Clock Radio, illustrating the power input and USB charging port.
4. Mantemento
4.1 Limpeza
Wipe the unit with a soft, dry cloth. Do not use abrasive cleaners or solvents, as they may damage the finish.
4.2 Substitución da batería
If the backup batteries are depleted, the time and alarm settings will be lost during a power outage. Replace the 2 AAA batteries in the battery compartment when necessary to maintain the backup function.
5 Solución de problemas
- Sen alimentación/Pantalla apagada: Ensure the AC adapter is securely plugged into both the unit and a working wall outlet. Check the power source.
- A alarma non soa: Verify that the alarm is activated (AL1/AL2 indicator is on) and the alarm time is correctly set. Check the alarm source (buzzer/radio) and volume level.
- Mala recepción de radio FM: Extend the FM antenna wire fully. Try repositioning the unit or the antenna for better signal reception.
- Time/Alarm Settings Lost: Ensure backup batteries are installed and are not depleted. Replace old batteries if necessary.
6. Especificacións
- Marca: RCA
- Modelo: RC551
- Cor: Negro
- Tipo de visualización: LED dixital
- Fonte de enerxía: AC Power Adapter (included), 2 x AAA batteries (not included) for backup
- Dimensións do produto: Approximately 7.09"W x 2.17"H
- Características: Dual Wake Alarm, Sleep Timer, Snooze, FM Radio, USB Charging Port
7. Garantía e soporte
For warranty information and customer support, please refer to the documentation included with your product or visit the official RCA websitio. Garde o recibo da compra como proba de compra para calquera reclamación de garantía.





