1. Introducció
The SONOFF SV is a low voltage WiFi smart switch designed for controlling electrical devices remotely. It supports a 5-24V DC power supply. While primarily a low-voltage device, its power supply can be separated to control both AC and DC power, though this requires some welding. The module includes reserved GIPO pins for secondary development, offering flexibility for advanced users.
This WiFi-based wireless switch connects to a wide range of appliances, enabling remote control via the eWeLink mobile application. Data is transmitted to a cloud platform (Amazon AWS global server) through your WiFi router, allowing users to turn connected appliances on or off from anywhere with network access. The SONOFF SV also supports setting timing schedules, including countdowns and scheduled on/off events, to automate your home.
2. Característiques
- Comandament ON/OFF: Turn electrical devices on/off from anywhere using the eWeLink app.
- Control LAN: Operate the device even when WiFi has no internet access.
- Low Power Supply: Operates with a 5-24V DC low voltage entrada.
- Suport de l'aplicació: Free eWeLink mobile application available for iOS (App Store) and Android (Google Play).
- Estat de sincronització: Provides real-time device status updates to the app.
- Temporització: Set scheduled, countdown, or loop timers to automate device operation.
- Control compartit: Comparteix el control dels teus dispositius domèstics intel·ligents amb els membres de la família.
- Scene & Smart Scene: Group devices for simultaneous control with a single tap, or trigger actions based on environmental conditions from sensors (e.g., temperature, humidity).
- Compatibilitat: Works seamlessly with Amazon Alexa, Google Assistant, and IFTTT.
- Desenvolupament secundari: Reserved GIPO pins support custom firmware and advanced projects.
- Cloud OTA Upgrade: Supports over-the-air firmware updates for continuous improvement.


3. Especificacions
| Atribut | Valor |
|---|---|
| Nom de marca | SONOFF |
| Número de model | Wireless Timing Switch |
| Font d'alimentació | 5-24V DC |
| Mètode de comunicació | WiFi (802.11 b/g/n) |
| Compatibilitat | All Compatible (eWeLink, Alexa, Google Home, IFTTT) |
| CPU | Tensilica L106 Diamond series 32-bit micro-MCU (80MHz/160MHz) |
| Baix consum d'energia | Standby < 1.0 mW (DTIM3) |
| Pes | 15 g |
| Dimensions | 65 mm x 34 mm x 12 mm |
| Origen | Xina continental |
| Certificació | CE |
| Càmera equipada | No |
| Substància química molt preocupant | Cap |
3.1. Current Consumption (Typical Values at 3.3V supply, 25°C ambient)
| Mode | Corrent (mA) |
|---|---|
| Transmissió 802.11b, CCK 1Mbps, POUT=+19.5dBm | 215 |
| Transmissió 802.11b, CCK 11Mbps, POUT=+18.5dBm | 197 |
| Transmissió 802.11g, OFDM 54Mbps, POUT =+16dBm | 145 |
| Transmet 802.11n, MCS7, POUT=+14dBm | 135 |
| Receive 802.11b, packet length=1024 byte, -80dBm | 60 |
| Receive 802.11g, packet length=1024 byte, -70dBm | 60 |
| Receive 802.11n, packet length=1024 byte, -65dBm | 62 |
| En espera | 0.9 |
| Deep sleep (RTC) | 0.06 (60 uA) |
| Power save mode DTIM 1 | 1.2 |
| Power save mode DTIM 3 | 0.86 |
| Sleep mode (Memory retention) | 0.31 |
| Total shutdown | 0.001 (1 uA) |
3.2. Radio Channel Frequencies (2.4GHz)
| Canal núm. | Freqüència (MHz) | Canal núm. | Freqüència (MHz) |
|---|---|---|---|
| 1 | 2412 | 8 | 2447 |
| 2 | 2417 | 9 | 2452 |
| 3 | 2422 | 10 | 2457 |
| 4 | 2427 | 11 | 2462 |
| 5 | 2432 | 12 | 2467 |
| 6 | 2437 | 13 | 2472 |
| 7 | 2442 | 14 | 2484 |
4. Contingut del paquet
- 1x SONOFF SV Wifi Smart Switch Module
5. Informació de seguretat
- Always ensure the power supply is disconnected before performing any wiring or maintenance.
- The SONOFF SV operates on low voltage (5-24V DC). Do not connect directly to high voltage AC without proper isolation and conversion.
- If separating the power supply for AC/DC control, professional welding and electrical knowledge are required. Improper wiring can lead to electric shock or device damage.
- This product does not come with a protective shell. Ensure the module is installed in a suitable, insulated enclosure to prevent accidental contact and protect it from environmental factors like moisture and dust.
- Mantingueu el dispositiu allunyat de l'aigua, el foc i les altes temperatures.
6. Configuració i cablejat
6.1. Instruccions de cablejat
The SONOFF SV supports two main wiring modes: Default Mode and Isolated Mode. Always ensure power is OFF before wiring.

Mode predeterminat:
In this mode, the WiFi circuit and the relay circuit share the same power supply.
- Entrada Voltage: 5V to 24V DC.
- Configuració del pont:
- If input is 5V, connect the jumper.
- If input is between 5V and 24V (e.g., 12V, 24V), disconnect the jumper.
- Connect the input power supply to the 'IN+' and 'IN-' terminals.
- Connect your device to be controlled to the 'Output +' and 'Output -' terminals.
Isolated Mode:
This mode allows the WiFi circuit and the relay circuit to be powered by isolated power supplies, enabling control of different voltage types (e.g., AC load with DC control). This requires modification of the board.
- Modificació: Amb cura remove both resistors located near the input terminals.
- WiFi Circuit Power: Connect a DC 5-24V power supply to the dedicated 5-24V input terminals for the WiFi module.
- Relay Circuit Input: Connect the power supply for the device to be controlled (DC 0-30V or AC 90-250V) to the 'Input +' and 'Input -' terminals.
- Relay Circuit Output: Connect your device to be controlled to the 'Output +' and 'Output -' terminals.
Caution: Modifying the board for Isolated Mode requires advanced technical skills and can void your warranty if done incorrectly. Ensure all connections are secure and properly insulated.
6.2. Instal·lació i emparellament de l'aplicació
- Descarrega l'aplicació eWeLink: Cerca "eWeLink" in the Apple App Store (for iOS) or Google Play Store (for Android) and install the application.
- Registra't/Inici de sessió: Obriu l'aplicació eWeLink i registreu un compte nou o inicieu la sessió amb un d'existent.
- Introduïu el mode de vinculació: Power on your SONOFF SV module. Press and hold the pairing button on the module for approximately 5 seconds until the LED indicator starts blinking rapidly (usually three short blinks followed by one long blink).
- Afegeix un dispositiu a l'aplicació: In the eWeLink app, tap the "+" icon (or "Add Device") and follow the on-screen instructions to add your SONOFF SV. You will need to select your WiFi network and enter its password.
- Reconeixement del dispositiu: The app will automatically detect and connect to the SONOFF SV. Once connected, you can rename your device for easy identification.
- Connexió automàtica: The device will automatically connect to the server, register, and update its status information.
7. Instruccions de funcionament
7.1. eWeLink App Control
- Comandament ON/OFF: Tap the device icon in the eWeLink app to toggle the connected appliance on or off from anywhere.
- Control LAN: If your internet connection is down, you can still control the device as long as your mobile device and the SONOFF SV are on the same local network.
- Horaris: Access the device settings to set up various timers:
- Programat encès/apagat: Set specific times for the device to turn on or off daily or on selected days.
- Temporitzador de compte enrere: Configureu un temporitzador perquè el dispositiu s'apagui després d'un temps especificat.
- Temporitzador de bucle: Configure the device to cycle on and off at regular intervals.
- Control compartit: Invite family members to control the device by sharing access through the app.
- Escenes: Create custom scenes to control multiple devices with a single tap. For example, a "Good Morning" scene could turn on your lights and coffee maker.
- Escenes intel·ligents: Automate actions based on sensor data (e.g., turn on a fan if temperature exceeds a certain threshold, assuming compatible sensors are integrated).
7.2. Integració del control per veu
The SONOFF SV can be integrated with popular voice assistants for hands-free control.
- Amazon Alexa: Link your eWeLink account to your Alexa app. Once linked, you can use voice commands like "Alexa, turn on [device name]" or "Alexa, turn off [device name]".
- Assistent de Google: Link your eWeLink account to your Google Home app. Use commands such as "Hey Google, turn on [device name]" or "Hey Google, turn off [device name]".
7.3. IFTTT Integration
Connect your SONOFF SV with IFTTT (If This Then That) to create custom automations with other smart devices and services. For example, you could set up an applet to turn on your lights when you arrive home.
8. Manteniment
- Neteja: Use a dry, soft cloth to clean the module. Do not use liquids or abrasive cleaners.
- Medi ambient: Ensure the module is kept in a dry, dust-free environment, especially since it does not come with a protective casing.
- Actualitzacions de firmware: The SONOFF SV supports cloud OTA (Over-The-Air) upgrades. Regularly check the eWeLink app for available firmware updates to ensure optimal performance, security, and access to new features.

9. Solució De Problemes
- Device Offline in App:
- Check if the SONOFF SV module is powered on.
- Verify your WiFi router is working and has internet access.
- Ensure the WiFi signal strength is adequate where the module is installed.
- Try restarting the SONOFF SV module and your WiFi router.
- Unable to Pair Device:
- Make sure the device is in pairing mode (LED blinking rapidly). If not, press and hold the pairing button for 5 seconds.
- Ensure your mobile device is connected to a 2.4GHz WiFi network (5GHz networks are not supported for pairing).
- Check that the WiFi password entered in the app is correct.
- Move the device closer to the WiFi router during pairing.
- El control per veu no funciona:
- Confirm that your eWeLink account is correctly linked to your Amazon Alexa or Google Home account.
- Check the device name in the eWeLink app and use that exact name in your voice commands.
- Ensure your voice assistant device (e.g., Echo, Google Home speaker) is online and functioning.
- Can it control AC? Yes, but it requires external wiring and isolation. Refer to the 'Isolated Mode' wiring diagram in Section 6.1 and ensure proper safety measures are taken.
- Com restablir? Press the button on the module for 5 seconds until the LED blinks rapidly to enter pairing mode. This effectively resets the WiFi connection.
10. Consells d'usuari
- Firmware personalitzat: For advanced users, the SONOFF SV is known to be compatible with custom firmware like Tasmota, allowing integration with home automation platforms such as Home Assistant. This can be a great option for DIY projects.
- Tancament: Since the module does not come with a shell, consider using a suitable waterproof or protective enclosure, especially if installing in damp environments or exposed areas.
- Wiring Labels: Always label your wiring clearly during installation to simplify future maintenance or modifications.
- Low Power Applications: Due to its very low power consumption, this module is ideal for battery-powered projects or applications where energy efficiency is critical.
11. Garantia i Suport
For technical support, warranty claims, or further inquiries, please contact the seller or manufacturer directly. Detailed technical specifications for the underlying ESP8266EX chip can be found in the official datasheet: ESP8266EX Datasheet. Additional product information and community support may be available on the Sonoff SV wiki: https://wiki.iteadstudio.com/Sonoff_SV.
12. Compliment normatiu
Aquest dispositiu compleix amb les normes de certificació CE, que indiquen la conformitat amb les normes de salut, seguretat i protecció del medi ambient per als productes venuts dins de l'Espai Econòmic Europeu (EEE).





