1. Introduction
The SONOFF 4CH R3 and 4CH PRO R3 are 4-channel intelligent wireless switch modules designed to integrate seamlessly into your smart home system. These devices allow you to control up to four electrical appliances independently via Wi-Fi. The 4CH PRO R3 model further enhances functionality with an integrated 433MHz RF receiver, enabling control via RF remote.
Both models support three distinct working modes: Inching, Interlock, and Self-locking, providing versatile control options for various applications. The inching mode offers adjustable delay times from 0.25 to 4 seconds.
2. Key Features
- Remote ON/OFF: Turn electrical devices on/off from anywhere using the eWeLink app.
- App Support: Free iOS and Android mobile App eWeLink for comprehensive control.
- Independent Control: Control each of the four channels separately.
- 3 Working Modes: Easily switch between Interlock, Self-locking, and Inching modes.
- Adjustable Delay Time: In Inching mode, set devices to turn on for 0.25-4 seconds.
- DIN Rail Mounted: Designed for easy installation in industrial control environments.
- Sync Status: Real-time device status updates provided directly to the eWeLink App.
- Timing: Set scheduled or countdown timers to automate device operation.
- Share Control: Share control of your smart home devices with family members.
- Scene: Create custom scenes to control a group of devices with a single tap.
- Smart Scene: Automate device actions based on environmental conditions like temperature or humidity.
- Voice Control: Seamlessly integrates with Amazon Alexa and Google Home for voice commands.
3. Safety Precautions
Always ensure power is disconnected before installation or maintenance. The device features a durable flame-retardant ABS shell to provide maximum safety for connected devices. Do not exceed the maximum current and wattage ratings to prevent damage and ensure safe operation.
4. Specifications
| Attribute | Value |
|---|---|
| Brand Name | SONOFF |
| Model Number | 4ch r3/4ch pro r3 |
| Type | 4 Gang Wifi Switch Module |
| Communication Method | Wi-fi |
| Compatibility | All Compatible |
| State of Assembly | Ready-to-Go |
| Camera Equipped | No |
| High-concerned chemical | None |
| Voltage Range | 90-250V AC / 5-24V DC |
| Max. Current | 10A/gang (total 4 channels no more than 16A) |
| Max. Wattage | 2200W/gang |
| Wireless Frequency | WiFi 2.4GHz |
| APP Name | eWelink |
| Material | Fire-retardant ABS |
| Product Size | 145*90MM |
| Operating Temperature | 0ºC-40ºC (32°F-104°F) |
| Operating Humidity | 5%-90%RH, Non-condensing |
| Supports Function | Works with Alexa & Google Home, IFTTT |
5. Installation
5.1 Wiring Instructions
Ensure the main power supply is turned off before attempting any wiring. Refer to the diagrams below for correct wiring of your specific model (4CH R3 or 4CH PRO R3) and power input (AC or DC).
For 4CHR3 and 4CHPRO3 models, wiring can be done directly. For 4CHR2/4CHPRO2, you may need to uncover the wiring area as shown in the illustration.
5.2 DIN Rail Mounting
The device is designed for easy mounting on a DIN rail, making it convenient for industrial control setups or organized home automation panels.
- Install the switch into the guide rail.
- Slide it to the right place along the rail.
- Press the mounting brackets until they click into place, securing the device.
6. Operation
6.1 Working Modes
The SONOFF 4CH R3/4CH PRO R3 offers three distinct working modes to suit various automation needs:
- Inching Mode: Turns on a device for a specified duration (0.25-4 seconds) and then automatically turns it off. This is ideal for temporary actions like corridor lighting or opening a gate for a short period.
- Interlock Mode: Ensures that only one channel is active at a time. When one channel is turned on, all other channels are automatically turned off. This is useful for controlling devices like garage doors or blinds where only one action (open/close) should be active at a time.
- Self-locking Mode: Allows independent control of each of the four connected devices. Each channel can be turned on or off without affecting the status of the other channels.
6.2 App Control (eWeLink)
Download the eWeLink app from your device's app store (iOS or Android). Follow the in-app instructions to pair your SONOFF 4CH R3/PRO R3 module. Once paired, you can remotely control each channel, set schedules, create scenes, and monitor device status.
6.3 Voice Control
The SONOFF 4CH R3/PRO R3 is compatible with Amazon Alexa and Google Home. Link your eWeLink account to your voice assistant app to enable voice commands for your connected devices. For example, you can say, "Alexa, turn on Channel 1" or "Hey Google, turn off the living room light."
6.4 Product Overview Video
Watch this video for a visual demonstration of various Sonoff smart home devices, including wiring diagrams and smart home integration examples.
7. Troubleshooting
- Device not connecting to Wi-Fi: Ensure your Wi-Fi network is 2.4GHz. Check that the device is within range of your router. Restart the device and your router, then try pairing again.
- App control issues: Verify your internet connection. Ensure the eWeLink app is updated to the latest version. If issues persist, try re-pairing the device.
- Voice control not working: Confirm that your eWeLink account is correctly linked to Amazon Alexa or Google Home. Check your voice assistant's settings and ensure the device is recognized.
- Device unresponsive: Check all wiring connections to ensure they are secure and correct. Verify that the power supply is stable and within the specified voltage range.
8. User Tips
- Always double-check your wiring before powering on the device to prevent electrical hazards.
- For optimal performance, ensure your Wi-Fi signal is strong in the area where the switch is installed.
- Utilize the scheduling and scene features in the eWeLink app to automate daily routines and enhance convenience.
9. Warranty and Support
This product comes with a 12-month manufacturer's limited warranty for defective items (excluding items damaged and/or misused after receipt). Accessories typically come with a 3-month warranty.
For detailed instructions and further information, you can refer to the official user manual PDF. A PDF version of the user manual is available for download.
