Sonoff 4CH Pro R3 Smart Switch WiFi and RF

This module connects to 2.4GHz Wi-Fi and pairs with 433MHz RF remotes, offering flexible control options. Each of the four channels can be operated independently, and users can configure modes to suit different applications:

• Self-locking mode: Each channel toggles on/off independently
• Interlock mode: Only one channel can be active at a time—ideal for motor control
• Inching mode: Channels turn off automatically after a set time—useful for gates or garage doors

The 4CH Pro R3 supports DIN rail mounting, making it easy to install in distribution boards. It integrates with the eWeLink app, Alexa, Google Assistant, and SmartThings, enabling remote control, voice activation, and scene automation.

It also includes manual control buttons on the device, allowing local operation without internet. The RF functionality adds convenience for users who prefer physical remotes or need control in areas without Wi-Fi.

Key Features

• Four independent relay channels
• Wi-Fi + 433MHz RF control
• Three modes: self-locking, interlock, inching
• Manual control buttons on device
• Voice control via Alexa, Google Assistant, SmartThings
• Scene automation, timers, and schedules
• DIN rail mounting for centralized installation
• Ideal for lights, gates, garage doors, and multi-zone control

Technical Specifications

• Model: Sonoff 4CH Pro R3
• Channels: 4 (independent control)
• Max Load: 10A per channel
• Voltage Range: 100–240V AC / 5–24V DC
• Operating Modes: Self-locking, Interlock, Inching
• Connectivity: Wi-Fi 2.4GHz
• App Support: eWeLink
• Voice Assistants: Alexa, Google Assistant, SmartThings
• Dimensions: 145 mm × 90 mm × 34 mm
• RF Frequency: 433MHz
• Material: PC V0 flame-retardant plastic
• Mounting Type: DIN rail compatible
• Installation: Indoor use only (IP20 rating)
• Application: Multi-device smart control with RF fallback
• Colour: White