Sonoff 4CH Pro R3 Smart Switch WiFi RF

The Sonoff 4CH Pro R3 Smart Switch is a 4-gang Wi-Fi and RF enabled smart relay that provides versatile control and automation for up to four independent devices or circuits, supporting both AC and DC power inputs. It can be controlled via the eWeLink app, voice assistants, or a 433MHz RF remote, and is designed for easy installation on a DIN rail.

Key Features:

• Four Independent Channels: The device allows separate control of up to four connected lights or appliances, with a maximum load of 10A (2200W) per channel and 40A (8800W) total for the entire unit.
• Multiple Power Input Options: It can be powered by a wide voltage range of either 100-240V AC or 9-23V DC, making it highly adaptable for various applications, including integration with low-voltage systems like garage doors or irrigation systems.
• Three Powerful Working Modes: Unlike its predecessor, the R3 allows users to switch between modes directly within the eWeLink app, rather than using hardware jumpers.
  • Self-locking mode: Each channel can be turned on and off independently, behaving like a standard switch.
  • Interlock mode: Only one channel can be on at a time; turning one on automatically turns off the others. This is ideal for motor control applications, like roller blinds or garage doors.
  • Inching mode (Momentary): A connected device turns on for a set duration (adjustable from 0.5 to 3600 seconds) and then switches off automatically. This is perfect for momentary actions like pulsing a gate release.
• RF Control: The "Pro" model includes 433MHz RF capability, allowing control via a compatible RF remote controller (sold separately), which provides a reliable backup control method if the Wi-Fi network is down.
• Smart Integration: It works with Amazon Alexa, Google Assistant, and supports IFTTT for enhanced smart home scenes and voice control.
• Dry Contact Output: The Pro version features dry contact relays (uncommitted changeover contacts), which means the output power is decoupled from the input power source, allowing for switching different voltage types or acting as a simple trigger in automation systems.
• DIN Rail Mounting: The unit is designed with a durable, fire-retardant PC V0 enclosure and supports standard DIN-rail mounting, simplifying installation in electrical distribution boxes.