SONOFF S40 WiFi Smart Plug User Manual

1. Introduction

The SONOFF S40 WiFi Smart Plug is a compact, ETL-certified smart outlet designed to bring convenience and energy efficiency to your home. It allows you to remotely control connected appliances, monitor energy consumption, set schedules, and integrate with popular voice assistants like Amazon Alexa and Google Home. This manual provides detailed instructions for setting up and operating your S40 Smart Plug.

2. Product Features

• Remote Control: Turn devices on/off from anywhere using the eWeLink app.
• Energy Monitoring: Track real-time power, current, voltage, and view 180-day energy usage data.
• Voice Control: Compatible with Amazon Alexa and Google Home for hands-free operation.
• Scheduling: Set countdown, single, or repeat timers to automate device operation.
• Compact Design: Occupies minimal space on your wall outlet.
• Overload Protection: Automatically powers off to prevent damage from excessive current.
• ETL Certified: Ensures safety and quality standards are met.

3. Safety Information

Please read and follow all safety instructions to prevent injury or damage. Ensure the device is used within its specified electrical ratings (15A, 120V). Do not disassemble or modify the device. Keep away from water and high humidity environments. This device is for indoor use only.

4. Product Overview

The SONOFF S40 Smart Plug is a compact device that plugs directly into a standard wall outlet. It features a power button/indicator light on the front for manual control and status indication. The back of the plug displays important electrical specifications and certifications.

5. Setup Guide

5.1. Download the eWeLink App

The SONOFF S40 Smart Plug requires the eWeLink app for initial setup and smart control. Download the app from your device's app store or scan the QR code on the product packaging.

• Download Link: http://app.coolkit.cc/dl.html

5.2. Device Pairing

Before pairing, ensure your eWeLink app is updated to version 4.31.0 or above. The SONOFF S40 only supports 2.4GHz WiFi networks. Ensure your router has separate SSIDs for 2.4GHz and 5GHz networks, or temporarily disable the 5GHz network during pairing if you encounter issues.

1. Plug the S40 Smart Plug into a power outlet.
2. Press and hold the pairing button on the plug for 5 seconds until the WiFi LED indicator flashes in a pattern of two short blinks and one long blink, indicating it's in pairing mode.
3. Open the eWeLink app, go to "Home", and tap the "+" icon (bottom).
4. Select "Add Device" and then choose "2.4GHz WiFi Only".
5. Select your 2.4GHz WiFi network and enter the password.
6. The app will search for and add the device. Once found, confirm the addition.

6. Operating Instructions

6.1. Remote Control

Once paired, you can control your S40 Smart Plug from anywhere using the eWeLink app. Simply tap the power icon next to the device name to toggle it on or off.

6.2. Energy Monitoring

The S40 Smart Plug provides real-time energy consumption data. Within the eWeLink app, you can view current power, current, and voltage. The app also stores 180 days of daily and monthly energy usage data, allowing you to track electricity costs.

6.3. Scheduling and Timers

Automate your devices by setting schedules and timers. You can configure countdown timers, single-event timers, or recurring schedules to automatically turn your appliances on or off at specific times.

6.4. Voice Control Integration

The S40 Smart Plug is compatible with Amazon Alexa and Google Home, allowing for convenient voice control of your connected devices.

6.4.1. Linking with Amazon Alexa

1. Log in to your Amazon Alexa app and add your Echo device.
2. Log in to your eWeLink account.
3. In the eWeLink app, go to "Home", tap the "+" icon, then "Link Accounts".
4. Select "Amazon Alexa".
5. Tap "Link with Amazon Alexa" and follow the prompts to link your accounts.
6. Once linked, say "Alexa, discover devices" or use the Alexa app to discover devices.

6.4.2. Linking with Google Home

1. Log in to your Google Home app and add your Google Home speaker.
2. Log in to your eWeLink account.
3. In the eWeLink app, go to "Home", tap the "+" icon, then "Link Accounts".
4. Select "Google Home".
5. Tap "Link with Google Assistant" and follow the prompts to link your accounts.
6. Sync and configure your eWeLink devices within the Google Home app.

6.5. Overload Protection

The S40 Smart Plug is equipped with overload protection. If the connected appliance draws current exceeding 15A, the plug will automatically power off to prevent damage to the device and the appliance. This feature enhances safety and prolongs the lifespan of your electronics.

7. Maintenance

To ensure optimal performance and longevity of your SONOFF S40 Smart Plug, keep it clean and free from dust. Disconnect from power before cleaning. Use a dry, soft cloth for cleaning. Avoid using harsh chemicals or abrasive materials. Regularly check for firmware updates in the eWeLink app to benefit from new features and improvements.

8. Troubleshooting

• Device Offline: Ensure the plug is powered on and within range of your 2.4GHz WiFi router. Check your router settings to confirm the 2.4GHz network is active and has a stable connection.
• Pairing Failure: Verify your WiFi network is 2.4GHz. If you have a combined 2.4GHz/5GHz network, try separating them or temporarily disabling 5GHz during pairing. Ensure the WiFi password is entered correctly. Try resetting the plug by holding the button for 5 seconds until the LED flashes as described in the pairing section.
• Voice Control Issues: Confirm that your eWeLink account is correctly linked to Amazon Alexa or Google Home. Ensure the device names are recognized by the voice assistant.
• No Energy Data: Ensure the device is connected and actively being used. Check the eWeLink app for any error messages or update the app to the latest version.

9. Specifications

10. Warranty and Support

For warranty information and technical support, please refer to the official SONOFF website or contact their customer service. You can also visit the SONOFF Store on Amazon for additional product information and resources.