Introducción
The EMOS P5821 Energy Cost Meter is designed to provide a clear overview of your electricity consumption. This practical device allows you to monitor the power usage of your household appliances, helping you understand and manage your energy costs effectively. It measures power (W), energy consumption (kWh), voltage, amperage, and calculates costs.

Imagen: Frente view of the EMOS P5821 Energy Cost Meter, showing the LCD display, control buttons (HISTORY, ENERGY/+, COST/-, SET/OK, RESET), and the integrated power socket.
Información de seguridad
- Asegúrese de que el dispositivo esté conectado a una toma de corriente con conexión a tierra adecuada.
- No exceda la capacidad de carga máxima de 3680 W.
- Keep out of reach of children. The device features child protection/safety.
- No desmonte ni intente reparar el dispositivo usted mismo. Contacte con personal cualificado para obtener servicio técnico.
- Evite la exposición a la humedad o temperaturas extremas.
Características del producto
- Medición integral: Measures power (W), energy consumption (kWh), voltage, amperage, and calculates electricity costs.
- Amplio rango de medición: Power measurement from 2 W to 3680 W, energy measurement from 0 kWh to 999 kWh.
- Pantalla LCD: Clear display for easy reading of measurements.
- Protección contra sobrecarga: Integrated LED indicator for overload situations, enhancing safety.
- Copia de seguridad de la batería: Includes 2x 1.5 V (LR44/AG13) batteries to retain data during power outages.
- Seguridad infantil: Equipped with child protection features.
Contenido del paquete
Al desembalar, asegúrese de que todos los artículos estén presentes y sin daños:
- 1 x EMOS P5821 Energy Cost Meter (Wattmeter)

Image: The EMOS P5821 Energy Cost Meter shown within its retail packaging, displaying product information and model number P5821.
Configuración
- Encendido inicial: Plug the EMOS P5821 Energy Cost Meter into a standard wall socket. The LCD display should illuminate.
- Instalación de la batería (si no está preinstalada): The device uses 2x 1.5V (LR44/AG13) batteries for data backup. Locate the battery compartment, typically on the back, and insert the batteries with correct polarity.
- Conecte el aparato: Plug the appliance you wish to monitor into the socket on the front of the EMOS P5821 meter.

Imagen: En ángulo view of the EMOS P5821 Energy Cost Meter, highlighting the LCD screen and the blue control buttons for various functions.
Instrucciones de funcionamiento
Once an appliance is connected and powered on, the meter will begin measuring its electricity consumption. Use the buttons to navigate through different display modes and settings.
Funciones de los botones:
- HISTORIA: Presione para view historical data or switch between different time-based measurements (e.g., daily, weekly, total).
- ENERGY/+: Cycles through various energy-related displays such as current power (W), voltagmi(V), amperage (A), and total energy consumption (kWh). Also used to increase values during setting.
- COST/-: Displays the calculated cost of electricity consumed. Can also be used to decrease values during setting.
- CONFIGURAR/Aceptar: Enters setting mode (e.g., to set electricity tariff) or confirms a selection.
- REINICIAR: Resets all accumulated data and settings to default. Use with caution.
To set the electricity tariff for cost calculation, press the CONFIGURAR/Aceptar botón y uso ENERGY/+ y COST/- to adjust the price per kWh, then press CONFIGURAR/Aceptar De nuevo para confirmar.
Mantenimiento
- Limpie el dispositivo con un paño suave y seco. No utilice limpiadores abrasivos ni disolventes.
- Ensure the ventilation slots (if any) are not blocked.
- Replace the backup batteries (LR44/AG13) periodically, or if the display shows signs of fading when unplugged.
Solución de problemas
| Problema | Posible causa | Solución |
|---|---|---|
| La pantalla está en blanco. | No power from wall socket or backup batteries are depleted. | Check wall socket. Replace LR44/AG13 backup batteries. |
| No hay lecturas para el aparato conectado. | Appliance not powered on, or not drawing sufficient power (below 2W). | Ensure appliance is switched on. The meter has a minimum measurement threshold of 2W. |
| Overload indicator (LED) is on. | Connected appliance exceeds the maximum load of 3680 W. | Unplug the appliance immediately. Do not connect appliances exceeding 3680 W. |
| Cálculo de coste incorrecto. | Electricity tariff not set correctly. | Enter setting mode (SET/OK) and adjust the price per kWh to your local tariff. |
Presupuesto
- Marca: EMOS
- Número de modelo: P5821 (FHT 9999)
- Número de pieza: FHT 9999
- Dimensiones del producto: 7 x 9 x 18.5 cm
- Peso: 10 gramos
- Fuente de energía: Mains powered, with battery backup
- Copia de seguridad de la batería: 2x 1.5 V (LR44/AG13) batteries (not included by default, check packaging)
- Measurement Range (Power): 2 W - 3680 W
- Measurement Range (Energy): 0 kWh - 999 kWh
- Protección contra sobrecarga: Sí
- Seguridad infantil: Sí
- ASIN: B014WKT7RA
- Primera fecha disponible: 15 de enero de 2020


Image: Left: Side profile of the EMOS P5821 Energy Cost Meter, illustrating its compact design. Right: Rear view of the meter, showing the battery compartment cover and the plug.
Garantía y soporte
For warranty information, technical support, or service inquiries, please refer to the official EMOS webSitio web o contacte a su distribuidor local. Conserve el recibo de compra como comprobante.
Fabricante: EMOS
Websitio: www.emos.eu
Código postal: 8595025366986