1. Introducción
Welcome to the user manual for your Merten MEG5935-0000 Wiser Radiator Thermostat. This document provides essential information for the safe and efficient installation, operation, and maintenance of your device. Please read this manual thoroughly before using the product and retain it for future reference.
The Merten MEG5935-0000 is a smart radiator thermostat designed to provide precise temperature control for individual rooms, enhancing comfort and energy efficiency within your home. It integrates with the Wiser smart home system for convenient app-based control.
2. Información de seguridad
- Seguridad eléctrica: Installation should only be performed by a qualified electrician or competent person in accordance with national wiring regulations.
- Manejo de la batería: Use only the specified battery type (3 Volt). Do not mix old and new batteries, or different types of batteries. Dispose of used batteries according to local regulations.
- Condiciones ambientales: No exponga el dispositivo a temperaturas extremas, luz solar directa, humedad o ambientes corrosivos.
- Niños: Mantenga el dispositivo y sus componentes fuera del alcance de los niños.
- Uso previsto: This device is intended for controlling radiator heating systems in residential environments. Any other use is considered improper.
3. Contenido del paquete
Por favor, compruebe que todos los artículos estén presentes en su paquete:
- Merten MEG5935-0000 Wiser Radiator Thermostat
- Hardware de instalación
- Manual de usuario (este documento)
4. Producto terminadoview

The image displays the Merten MEG5935-0000 Wiser Radiator Thermostat. It is a compact, cylindrical device, primarily light grey with a darker grey base. The top section is a rotatable cap for manual temperature adjustment. A small green LED indicator is visible below the cap. The word 'Wiser' is printed vertically on the main body. Below this, '+' and '-' symbols indicate manual temperature adjustment buttons or areas. The base features a threaded connection for mounting onto a radiator valve.
The Merten MEG5935-0000 Wiser Radiator Thermostat features a sleek design with intuitive controls. It includes a rotatable cap for manual temperature adjustments, an LED indicator for status feedback, and integrated buttons for fine-tuning settings. Its primary function is to regulate the flow of hot water into your radiator, maintaining your desired room temperature.
5. Configuración
5.1. Instalación Física
- Prepare the Radiator Valve: Ensure your radiator valve is compatible with the thermostat. If necessary, use appropriate adapters from the included installation hardware.
- Inserte las baterías: Open the battery compartment (usually located at the back or bottom of the device). Insert the required 3 Volt batteries, ensuring correct polarity. Close the compartment securely.
- Monte el termostato: Carefully screw the radiator thermostat onto the radiator valve. Tighten it firmly but do not overtighten.
- Calibración inicial: The thermostat may perform an initial calibration cycle after installation. Follow any on-screen prompts or LED indicators.
5.2. Emparejamiento y conexión inicial
The Merten MEG5935-0000 uses Wi-Fi connectivity and app control for smart functionality. To pair your device:
- Download the Wiser App: Buscar the 'Wiser' app on your Android or iOS device's app store and install it.
- Crear una cuenta: Open the app and follow the instructions to create a new user account or log in to an existing one.
- Agregar dispositivo: In the Wiser app, navigate to the 'Add Device' section. Select 'Radiator Thermostat' or a similar option.
- Siga las instrucciones de la aplicación: The app will guide you through the pairing process, which typically involves putting the thermostat into pairing mode (refer to the device's LED indicators) and connecting it to your home Wi-Fi network.
- Nombre su dispositivo: Assign a descriptive name to your thermostat (e.g., 'Living Room Radiator').
6. Operando
6.1. Control manual
Puede ajustar la temperatura directamente en el termostato:
- Temperatura de ajuste: Rotate the top cap clockwise to increase the temperature or counter-clockwise to decrease it. Alternatively, use the '+' and '-' buttons/areas on the device body for fine adjustments.
- Indicador LED: Observe the LED indicator for feedback on the current status or temperature setting.
6.2. Control de aplicaciones
For advanced control and scheduling, use the Wiser app:
- Ajuste remoto de temperatura: Change the temperature from anywhere using your smartphone.
- Programación: Set up heating schedules for different times of the day and week to optimize comfort and energy usage.
- Modos: Utilize various heating modes (e.g., Away, Eco, Boost) available in the app.
- Control de zona: If you have multiple Wiser devices, manage different heating zones independently.
7. Mantenimiento
- Limpieza: Clean the exterior of the thermostat with a soft, dry cloth. Do not use abrasive cleaners, solvents, or excessive moisture.
- Reemplazo de batería: When the battery level is low (indicated by the app or a specific LED pattern on the device), replace the batteries promptly with new 3 Volt batteries. Follow the instructions for battery insertion carefully.
- Actualizaciones de firmware: Periodically check the Wiser app for available firmware updates for your thermostat to ensure optimal performance and access to new features.
8. Solución de problemas
- El dispositivo no responde: Check battery level. Ensure the device is properly mounted and not obstructed.
- Sin conexión a la aplicación: Verify your home Wi-Fi network is active and the thermostat is within range. Restart your Wi-Fi router and the thermostat. Re-attempt the pairing process if necessary.
- Lectura de temperatura incorrecta: Ensure the thermostat is not exposed to direct heat sources (e.g., sunlight, other appliances) or drafts that could affect its sensor.
- Radiator Not Heating/Cooling: Check if the valve is fully open/closed. Ensure the thermostat is correctly calibrated. Verify the desired temperature setting in the app or on the device.
- Problemas con los indicadores LED: Refer to the Wiser app or online support resources for specific LED pattern meanings.
9. Especificaciones
| Característica | Especificación |
|---|---|
| Marca | Merten |
| Número de modelo | MEG5935-0000 |
| Dimensiones del producto | 58 x 23 x 23 cm; 80 g |
| Fuente de energía | Batería |
| Volumentage | 3 voltios |
| Tecnología de conectividad | Wifi |
| Tipo de control | App Control (Android) |
| Componentes incluidos | Hardware de instalación |
| Primera fecha disponible | 15 de enero de 2020 |
10. Información de garantía
The Merten MEG5935-0000 Wiser Radiator Thermostat is covered by a manufacturer's warranty. Please refer to the warranty card included with your product or visit the official Merten webConsulte el sitio web para conocer los términos y condiciones detallados sobre la cobertura, duración y procedimientos de reclamación de la garantía. Conserve su comprobante de compra para fines de garantía.
11. Soporte
For further assistance, technical support, or inquiries not covered in this manual, please contact Merten customer support. You can typically find contact information (phone numbers, email, support portals) on the official Merten website or within the Wiser app's help section. When contacting support, please have your product model number (MEG5935-0000) and purchase details ready.